.hello_section{
    position: relative;
    z-index: 1;
    width: 80%;
    height: 500px;
    margin: 0 auto;
    margin-top: 150px;
}

.hello_title_text_m{
    display: none;
}

.hello_section .hello_title_text{
    position: relative;
    z-index: 5;
    width: 60%;
    float: left;
    height: 600px;
}

.hello_section .title_text{
    width: 100%;
    font-family: 'Noto Sans KR', sans-serif;
    line-height: 140%;
    font-weight: 500;
    font-size: 50px;
    margin-top: 15%;
    position: relative;
    z-index: 2;
}

.hello_section .hello_title_text .sub_title_div{
    width: 123px;
    height: 41px;
    background-color: #d5e6f9;
    margin-top: -45px;
    transform: rotate(-2deg);
    position: relative;
    z-index: 1;
    left: 0px;
}

.hello_section .sub_text_div{
    margin-top: 60px;
    font-size: 20px;
    font-family: 'NotoSansKR-Light';
    font-weight: 500;
    color: rgb(78, 78, 78);
}

.hello_section .sub_text_div img{
    width: 25px;
    margin-right: 10px;
    margin-top: -5px;
}

.hello_section .hello_title_img{
    position: relative;
    z-index: 4;
    width: 40%;
    float: right;
    height: 600px;
    margin-top: 20px;
}

.hello_section .hello_title_img video{
    height: 100%;
    float: right;
    margin-top: 0%;
}


.seenine_mark{
    margin-top: 150px;
    margin-bottom: -50px;
    background:#307bff;
    width: 100%;
    height: 250px;
    position: relative;
    z-index: 80;
    text-align: center;
    padding-top: 20px;
    padding-left: 10px;
    padding-right: 10px;
}

.seenine_mark .sub_text_div_text_m{
    color: rgb(0, 0, 0);
    font-size: 30px;
    margin-top: 20px;
    line-height: 40px;
}

.seenine_mark .sub_text_div_text_m img{
    width: 40px;
    margin-right: 20px;
    margin-top: -7px;
}

.seenine_mark .sub_text_div_sub_text{
    color: rgb(107, 107, 107);
    font-size: 20px;
    width: 600px;
    margin: 30px auto;
    
}

.seenine_button {
    width: 220px;
    height: 50px;
    border: 2px solid #307bff;
    border-radius: 10px;
    line-height: 46px;
    color: #307bff;
    font-size: 22px;
    cursor: pointer;
    margin-top: 30px;
    background-color: white;
    margin-right: auto;
    margin-left: auto;

}



.api_mark{
    background: hsl(0, 0%, 95%);
    width: 100%;
    height: 160px;
    position: relative;
    z-index: 80;
    top: 40px;
    text-align: center;
    padding-top: 20px;
}

.api_mark .sub_text_div_text_m{
    color: rgb(0, 0, 0);
    font-size: 40px;
    margin-top: 20px;
    line-height: 50px;
}

.api_mark .sub_text_div_text_m img{
    width: 40px;
    margin-right: 20px;
    margin-top: -7px;
}

.api_mark .sub_text_div_sub_text{
    color: rgb(107, 107, 107);
    font-size: 20px;
    width: 600px;
    margin: 30px auto;
    
}

.video_section{
    width: 100%;
    margin-top: 0px;
    padding: 20px 0px;
    margin-bottom: 20px;
    background-color: #f4f6f9;
}

.video_section .vidio_title{
    width: 100%;
    position: relative;
    bottom: 50px;
    left: 17%;
}

.video_section .vidio_title .vidio_title_text{
    width: fit-content;
    font-size: 36px;
    font-weight: 600px;
    background-color: #307bff;
    border-radius: 100px 100px 100px 0;
    padding: 40px 60px;
    color: white;
}

.video_section .video_content{
    width: 60%;
    margin: 30px auto;
}

.video_section .video_content video{
    width: 100%;
}

.intro_section{
    width: 100%;
    margin-top: 230px;
    margin-bottom: 20px;
    background-color: #f4f6f9;
}

.intro_section .intro_title{
    width: calc(100% - 34%);
    position: relative;
    bottom: 70px;
    left: 15%;
}

.intro_section .intro_title .intro_title_img{
    float: left;
}

.intro_section .intro_title .intro_title_img img{
    width: 100px;
}

.intro_section .intro_title .intro_title_text{
    width: fit-content;
    font-size: 36px;
    font-weight: 600;
    background-color: #307bff;
    border-radius: 100px 100px 100px 0;
    padding: 40px 60px;
    color: white;
    float: left;
    margin-top: 20px;
    margin-left: 20px;
}

.intro_section .intro_sub_title{
    width: fit-content;
    margin: 20px auto;
    font-size: 40px;
    font-weight: bold;
    margin-top: 90px;
}

.intro_section .intro_sub_title .intro_sub_title_text{
    position: relative;
    z-index: 2;
}

.intro_section .intro_sub_title .sub_title_div{
    width: 183px;
    height: 41px;
    background-color: #d5e6f9;
    margin-top: -31px;
    transform: rotate(-2deg);
    position: relative;
    z-index: 1;
    left: 80px;
}

.intro_section .intro_sub_sub_title{
    width: fit-content;
    margin: 20px auto;
    font-size: 30px;
    margin-top: 40px;
    line-height: 38px;
    text-align: center;
}

.intro_section .intro_contents{
    width: 80%;
    height: 630px;
    margin: 60px auto;
}

.intro_section .intro_content{
    width: calc(94% / 3);
    float: left;
    margin-left: 1%;
    margin-right: 1%;
    background-color: white;
    height: 550px;
    padding: 50px 40px;
    border-radius: 30px;
}

.intro_section .intro_content_emoji{
    font-size: 90px;
    height: 90px;
    width: 90px;
    line-height: 90px;
}

.intro_section .intro_content_level{
    font-size: 20px;
    margin-top: 50px;
    line-height: 15px;
    width: fit-content;
    height: 20px;
    background-color: #d5e6f9;
    padding-right: 10px;
}

.intro_section .intro_content_title{
    font-size: 27px;
    font-weight: 800;
    line-height: 40px;
    margin-top: 20px;
}

.intro_section .intro_content_text{
    font-size: 21px;
    line-height: 35px;
    margin-top: 20px;
}

.level_section{
    background-color: #f4f6f9;
    width: 100%;
    height: 1200px;
    margin-top: 150px;
}

.level_section .level_section_title{
    width: calc(100% - 25%);
    position: relative;
    bottom: 50px;
    left: 5%;
    text-align: right;
}

.level_section .level_title{
    width: fit-content;
    font-size: 35px;
    font-weight: 800;
    margin: 20px auto;
    margin-top: 60px;
    text-align: left;
}

.level_section .level_title .level_title_text{
    position: relative;
    z-index: 2;
}

.level_section .level_section_title .level_section_img{
    width: fit-content;
    float: right;
    font-size: 100px;
    line-height: 100px;
}

.level_section .sub_title_div{
    width: 163px;
    height: 41px;
    background-color: #d5e6f9;
    margin-top: -31px;
    transform: rotate(-2deg);
    position: relative;
    z-index: 1;
}

.level_section .level_section_title .level_section_text{
    width: fit-content;
    font-size: 36px;
    font-weight: 400;
    background-color: rgb(236, 236, 236);
    border-radius: 100px 100px 0px 100px;
    padding: 40px 60px;
    color: black;
    float: right;
    margin-right: 20px;
}

.level_section .level_buttons{
    position: relative;
    width: 400px;
    margin: 0px auto;
    margin-top: 50px;
    height: 70px;
    background-color: white;
    border-radius: 80px;
}

.level_section .level_button{
    width: calc(100% / 2);
    height: 70px;
    float: left;
    text-align: center;
    line-height: 70px;
    border-radius: 80px;
    font-weight: 500;
    font-size: 30px;
    cursor: pointer;
}

.level_section .level_contents{
    width: 65%;
    margin: 0 auto;
}

.level_section .level_img{
    position: relative;
    z-index: 3;
    float: left;
    top: 55px;
    width: 28%;
    left: 10px;
}

.level_section .level_img img{
    width: 100%;
}

.level_section .level_content{
    position: relative;
    z-index: 2;
    top: 90px;
    float: left;
    width: 72%;
    right: 30px;
    height: 590px;
    background-color: white;
    border-radius: 20px;
    box-shadow: 1px 1px 5px #e6edff;
}

.level_section .level_content_title{
    width: 80%;
    margin: 40px auto;
    position: relative;
    left: 15px;
    font-size: 33px;
    font-weight: 700;
    top: 10px;
    text-align: center;
    line-height: 50px;
    height: 90px;
}

.level_section .level_content_imgs{
    width: 80%;
    margin: 0px auto;
    position: relative;
    left: 15px;
    height: auto;
    top: 10px;
}

.level_section .level_content_imgs img{
    float: left;
    width: 29%;
    margin-left: 2%;
    margin-right: 2%;
}

.level_section .level_content_text{
    width: 80%;
    margin: 0px auto;
    position: relative;
    left: 15px;
    top: 40px;
    line-height: 40px;
    font-size: 22px;
}

@media screen and (max-width: 1500px){
    .hello_section{
        position: relative;
        z-index: 1;
        width: 80%;
        height: 500px;
        margin: 0 auto;
        margin-top: 150px;
    }

    .hello_section .hello_title_text{
        position: relative;
        z-index: 5;
        width: 60%;
        float: left;
        height: 600px;
    }

    .hello_section .title_text{
        width: 100%;
        font-family: 'Noto Sans KR', sans-serif;
        line-height: 127%;
        font-weight: 500;
        font-size: 45px;
        margin-top: 20%;
    }

    
    .hello_section .hello_title_img{
        position: relative;
        z-index: 4;
        width: 40%;
        float: right;
        height: 500px;
        margin-top: 20px;
    }

    .hello_section .hello_title_img video{
        height: 100%;
        float: right;
        margin-top: 10%;
    }

    .intro_section{
        width: 100%;
        margin-top: 180px;
        margin-bottom: 20px;
        background-color: #f4f6f9;
    }
    
    .intro_section .intro_title{
        width: calc(100% - 34%);
        position: relative;
        bottom: 70px;
        left: 15%;
    }
    
    .intro_section .intro_title .intro_title_text{
        width: fit-content;
        font-size: 36px;
        font-weight: 600;
        background-color: #307bff;
        border-radius: 100px 100px 100px 0;
        padding: 40px 60px;
        color: white;
    }
    
    .intro_section .intro_sub_title{
        width: fit-content;
        margin: 20px auto;
        font-size: 40px;
        font-weight: bold;
        margin-top: 90px;
    }
    
    .intro_section .intro_sub_sub_title{
        width: fit-content;
        margin: 20px auto;
        font-size: 30px;
        margin-top: 40px;
        line-height: 38px;
        text-align: center;
    }
    
    .intro_section .intro_contents{
        width: 80%;
        height: 630px;
        margin: 60px auto;
    }
    
    .intro_section .intro_content{
        width: calc(94% / 3);
        float: left;
        margin-left: 1%;
        margin-right: 1%;
        background-color: white;
        height: 600px;
        padding: 50px 40px;
        border-radius: 30px;
    }
    
    .intro_section .intro_content_emoji{
        font-size: 90px;
        height: 90px;
        width: 90px;
        line-height: 90px;
    }
    
    .intro_section .intro_content_level{
        font-size: 20px;
        margin-top: 50px;
        line-height: 15px;
        width: fit-content;
        height: 20px;
        background-color: #d5e6f9;
        padding-right: 10px;
    }
    
    .intro_section .intro_content_title{
        font-size: 20px;
        font-weight: 800;
        line-height: 30px;
        margin-top: 20px;
        height: 90px;
    }
    
    .intro_section .intro_content_text{
        font-size: 17px;
        line-height: 35px;
        margin-top: 10px;
    }
    .api_mark{
        background: hsl(0, 0%, 95%);
        width: 100%;
        height: 160px;
        position: relative;
        z-index: 80;
        top: 40px;
        text-align: center;
        padding-top: 20px;
    }
    
    .api_mark .sub_text_div_text_m{
        color: rgb(0, 0, 0);
        font-size: 40px;
        margin-top: 20px;
    }
    
    .api_mark .sub_text_div_text_m img{
        width: 40px;
        margin-right: 20px;
        margin-top: -7px;
    }
    
    .api_mark .sub_text_div_sub_text{
        color: rgb(107, 107, 107);
        font-size: 20px;
        width: 600px;
        margin: 30px auto;
        
    }
    
    .api_mark .sub_text_div_sub_text{
        color: rgb(223, 223, 223);
        font-size: 20px;
        width: 600px;
        margin: 30px auto;
        
    }
    .video_section{
        width: 90%;
        margin: 0 auto;
        margin-top: 0px;
        margin-bottom: 130px;
    }
    
    .video_section .vidio_title{
        width: 100%;
    }
    
    .video_section .vidio_title .vidio_title_text{
        width: fit-content;
        font-size: 20px;
        background-color: #307bff;
        border-radius: 30px;
        padding: 20px 40px;
        color: white;
        margin: 0px auto;
    }
    
    .video_section .video_content{
        width: 100%;
        margin: 0px auto;
    }
    
    .video_section .video_content video{
        width: 100%;
    }
    
    .level_section{
        background-color: #f4f6f9;
        width: 100%;
        margin-top: 150px;
    }
    
    .level_section .level_section_title{
        width: calc(100% - 25%);
        position: relative;
        bottom: 50px;
        left: 17%;
        text-align: right;
    }
    
    .level_section .level_title{
        width: fit-content;
        font-size: 35px;
        font-weight: 800;
        margin: 20px auto;
        margin-top: 60px;
        text-align: left;
    }
    
    .level_section .level_title .level_title_text{
        position: relative;
        z-index: 2;
    }
    
    .level_section .sub_title_div{
        width: 163px;
        height: 41px;
        background-color: #d5e6f9;
        margin-top: -31px;
        transform: rotate(-2deg);
        position: relative;
        z-index: 1;
    }
    
    .level_section .level_section_title .level_section_text{
        width: fit-content;
        font-size: 36px;
        font-weight: 400;
        background-color: rgb(236, 236, 236);
        border-radius: 100px 100px 0px 100px;
        padding: 40px 60px;
        color: black;
        float: right;
    }
    
    .level_section .level_buttons{
        position: relative;
        width: 400px;
        margin: 0px auto;
        margin-top: 50px;
        height: 70px;
        background-color: white;
        border-radius: 80px;
    }
    
    .level_section .level_button{
        width: calc(100% / 2);
        height: 70px;
        float: left;
        text-align: center;
        line-height: 70px;
        border-radius: 80px;
        font-weight: 500;
        font-size: 30px;
        cursor: pointer;
    }
    
    .level_section .level_contents{
        width: 100%;
        margin: 0 auto;
    }
    
    .level_section .level_img{
        position: relative;
        z-index: 3;
        float: none;
        width: 300px;
        margin: 0px auto;
        left: 0;
        margin-top: 0px;
        top: 240px;
    }
    
    .level_section .level_img img{
        width: 100%;
    }
    
    .level_section .level_content{
        position: relative;
        float: none;
        z-index: 2;
        width: 90%;
        left: 5%;
        top: -520px;
        height: 1200px;
        padding-top: 300px;
        background-color: white;
        border-radius: 20px;
        box-shadow: 1px 1px 5px #e6edff;
    }
    
    .level_section .level_content_title{
        width: 80%;
        margin: 40px auto;
        position: relative;
        left: 0px;
        font-size: 33px;
        font-weight: 700;
        top: -280px;
        text-align: center;
        line-height: 44px;
    }
    
    .level_section .level_content_imgs{
        width: 80%;
        margin: 0px auto;
        position: relative;
        left: 0px;
        height: auto;
        top: 330px;
    }
    
    .level_section .level_content_imgs img{
        float: left;
        width: 25%;
        margin-left: 4%;
        margin-right: 4%;
    }
    
    .level_section .level_content_text{
        width: 80%;
        margin: 0px auto;
        position: relative;
        left: 0px;
        top: 370px;
        line-height: 30px;
        font-size: 20px;
        height: auto;
    }
}

@media screen and (max-width: 1300px){
    .hello_section{
        position: relative;
        z-index: 1;
        width: 80%;
        height: fit-content;
        margin: 0 auto;
        margin-top: 150px;
        padding-bottom: 20%;
    }

    .hello_section .hello_title_text{
        position: relative;
        z-index: 5;
        width: 100%;
        float: none;
        height: 250px;
    }

    .hello_section .title_text{
        width: 100%;
        font-family: 'Noto Sans KR', sans-serif;
        line-height: 127%;
        font-weight: 500;
        font-size: 45px;
        margin-top: 27%;
    }
    
    .hello_section .hello_title_img{
        position: relative;
        z-index: 4;
        width: 100%;
        float: none;
        height: 640px;
        margin: 0 auto;
        margin-top: 20px;
    }

    .hello_section .hello_title_img video{
        width: 100%;
        float: none;
        margin-top: 10%;
    }

    .intro_section{
        width: 100%;
        margin-top: 80px;
        margin-bottom: 20px;
        padding-bottom: 30px;
        background-color: #f4f6f9;
    }
    
    .intro_section .intro_title{
        width: calc(100% - 15%);
        position: relative;
        bottom: 70px;
        left: 5%;
    }
    
    .intro_section .intro_title .intro_title_text{
        width: fit-content;
        font-size: 36px;
        font-weight: 600;
        background-color: #307bff;
        border-radius: 100px 100px 100px 0;
        padding: 40px 60px;
        color: white;
    }
    
    .intro_section .intro_sub_title{
        width: fit-content;
        margin: 20px auto;
        font-size: 40px;
        font-weight: bold;
        margin-top: 90px;
    }
    
    .intro_section .intro_sub_sub_title{
        width: fit-content;
        margin: 20px auto;
        font-size: 30px;
        margin-top: 40px;
        line-height: 38px;
        text-align: center;
    }
    
    .intro_section .intro_contents{
        width: 80%;
        height: fit-content;
        margin: 60px auto;
    }
    
    .intro_section .intro_content{
        width: 100%;
        float: none;
        margin-left: 0%;
        margin-right: 0%;
        background-color: white;
        height: fit-content;
        padding: 40px 40px;
        border-radius: 30px;
        margin-bottom: 20px;
    }
    
    .intro_section .intro_content_emoji{
        font-size: 90px;
        height: 90px;
        width: 90px;
        line-height: 90px;
        margin: 0 auto;
    }
    
    .intro_section .intro_content_level{
        font-size: 20px;
        margin-top: 50px;
        line-height: 15px;
        width: fit-content;
        height: 20px;
        background-color: #d5e6f9;
        padding-right: 10px;
        margin: 20px auto;
    }
    
    .intro_section .intro_content_title{
        font-size: 25px;
        font-weight: 800;
        line-height: 30px;
        margin-top: 20px;
        height: 60px;
    }
    
    .intro_section .intro_content_text{
        font-size: 17px;
        line-height: 35px;
        margin-top: 10px;
    }
    .api_mark{
        background: hsl(0, 0%, 95%);
        width: 100%;
        height: 160px;
        position: relative;
        z-index: 80;
        top: -40px;
        text-align: center;
        padding-top: 20px;
    }
    
    .api_mark .sub_text_div_text_m{
        color: rgb(0, 0, 0);
        font-size: 25px;
        margin-top: 35px;
        line-height: 30px;
    }
    
    .api_mark .sub_text_div_text_m img{
        width: 40px;
        margin-right: 20px;
        margin-top: -7px;
    }

    .video_section{
        width: 100%;
        margin-top: 0px;
        margin-bottom: 130px;
    }
    
    .video_section .vidio_title{
        width: 100%;
    }
    
    .video_section .vidio_title .vidio_title_text{
        width: fit-content;
        font-size: 20px;
        background-color: #307bff;
        border-radius: 30px;
        padding: 20px 40px;
        color: white;
        margin: 0px auto;
    }
    
    .video_section .video_content{
        width: 100%;
        margin: 0px auto;
    }
    
    .video_section .video_content video{
        width: 100%;
    }
    
    .level_section{
        background-color: #f4f6f9;
        width: 100%;
        margin-top: 150px;
    }
    
    .level_section .level_section_title{
        width: calc(100% - 15%);
        position: relative;
        bottom: 50px;
        text-align: right;
        left: 10%;
    }
    
    .level_section .level_title{
        width: fit-content;
        font-size: 35px;
        font-weight: 800;
        margin: 20px auto;
        margin-top: 60px;
        text-align: left;
    }
    
    .level_section .level_title .level_title_text{
        position: relative;
        z-index: 2;
    }
    
    .level_section .sub_title_div{
        width: 163px;
        height: 41px;
        background-color: #d5e6f9;
        margin-top: -31px;
        transform: rotate(-2deg);
        position: relative;
        z-index: 1;
    }
    
    .level_section .level_section_title .level_section_text{
        width: fit-content;
        font-size: 25px;
        font-weight: 400;
        background-color: rgb(236, 236, 236);
        border-radius: 100px 100px 0px 100px;
        padding: 40px 40px;
        color: black;
        float: right;
        margin-right: 20px;
    }
    
    .level_section .level_buttons{
        position: relative;
        width: 400px;
        margin: 0px auto;
        margin-top: 50px;
        height: 70px;
        background-color: white;
        border-radius: 80px;
    }
    
    .level_section .level_button{
        width: calc(100% / 2);
        height: 70px;
        float: left;
        text-align: center;
        line-height: 70px;
        border-radius: 80px;
        font-weight: 500;
        font-size: 30px;
        cursor: pointer;
    }
    
    .level_section .level_contents{
        width: 100%;
        margin: 0 auto;
    }
    
    .level_section .level_img{
        position: relative;
        z-index: 3;
        float: none;
        width: 300px;
        margin: 0px auto;
        left: 0;
        margin-top: 0px;
        top: 240px;
    }
    
    .level_section .level_img img{
        width: 100%;
    }
    
    .level_section .level_content{
        position: relative;
        float: none;
        z-index: 2;
        width: 90%;
        left: 5%;
        top: -520px;
        height: 1150px;
        padding-top: 300px;
        background-color: white;
        border-radius: 20px;
        box-shadow: 1px 1px 5px #e6edff;
    }
    
    .level_section .level_content_title{
        width: 80%;
        margin: 40px auto;
        position: relative;
        left: 0px;
        font-size: 27px;
        font-weight: 700;
        top: -280px;
        text-align: center;
        line-height: 44px;
    }
    
    .level_section .level_content_imgs{
        width: 80%;
        margin: 0px auto;
        position: relative;
        left: 0px;
        height: auto;
        top: 330px;
    }
    
    .level_section .level_content_imgs img{
        float: left;
        width: 25%;
        margin-left: 4%;
        margin-right: 4%;
    }
    
    .level_section .level_content_text{
        width: 80%;
        margin: 0px auto;
        position: relative;
        left: 0px;
        top: 370px;
        line-height: 30px;
        font-size: 20px;
        height: auto;
    }
}

@media screen and (max-width: 780px){
    .hello_section{
        position: relative;
        z-index: 1;
        width: 80%;
        height: fit-content;
        margin: 0 auto;
        margin-top: 150px;
        padding-bottom: 0%;
    }

    .hello_section .hello_title_text{
        position: relative;
        z-index: 5;
        width: 100%;
        float: none;
        height: 160px;
    }

    .hello_section .title_text{
        width: 100%;
        font-family: 'Noto Sans KR', sans-serif;
        line-height: 127%;
        font-weight: 500;
        font-size: 30px;
        margin-top: 27%;
    }

    .hello_section .sub_text_div{
        margin-top: 40px;
        font-size: 17px;
        font-family: 'NotoSansKR-Light';
        font-weight: 500;
        color: rgb(78, 78, 78);
    }
    
    .hello_section .sub_text_div img{
        width: 20px;
        margin-right: 10px;
        margin-top: -5px;
    }
    
    .hello_section .hello_title_text .sub_title_div{
        width: 83px;
        height: 31px;
        background-color: #d5e6f9;
        margin-top: -32px;
        transform: rotate(-2deg);
        position: relative;
        z-index: 1;
        left: 0px;
    }
    
    .hello_section .hello_title_img{
        position: relative;
        z-index: 4;
        width: 100%;
        float: none;
        height: fit-content;
        margin: 0 auto;
        margin-top: 20px;
    }

    .hello_section .hello_title_img video{
        width: 100%;
        float: none;
        margin-top: 10%;
    }

    .intro_section{
        width: 100%;
        margin-top: 80px;
        margin-bottom: 20px;
        height: fit-content;
        padding-bottom: 30px;
        background-color: #f4f6f9;
    }
    
    .intro_section .intro_title{
        width: calc(100% - 10%);
        position: relative;
        bottom: 60px;
        left: 5%;
    }
    
    .intro_section .intro_title .intro_title_img{
        float: left;
    }
    
    .intro_section .intro_title .intro_title_img img{
        width: 80px;
    }

    .intro_section .intro_title .intro_title_text{
        width: fit-content;
        font-size: 30px;
        font-weight: 600;
        background-color: #307bff;
        border-radius: 100px 100px 100px 0;
        padding: 30px 40px;
        color: white;
    }
    
    .intro_section .intro_sub_title{
        width: fit-content;
        margin: 20px auto;
        font-size: 30px;
        font-weight: bold;
        margin-top: 90px;
    }

    .intro_section .intro_sub_title .intro_sub_title_text{
        position: relative;
        z-index: 2;
    }
    
    .intro_section .intro_sub_title .sub_title_div{
        width: 139px;
        height: 41px;
        background-color: #d5e6f9;
        margin-top: -31px;
        transform: rotate(-2deg);
        position: relative;
        z-index: 1;
        left: 60px;
    }
    
    .intro_section .intro_sub_sub_title{
        width: fit-content;
        margin: 20px auto;
        font-size: 20px;
        margin-top: 40px;
        line-height: 38px;
        text-align: center;
    }
    
    .intro_section .intro_contents{
        width: 80%;
        height: fit-content;
        margin: 60px auto;
    }
    
    .intro_section .intro_content{
        width: 100%;
        float: none;
        margin-left: 0%;
        margin-right: 0%;
        background-color: white;
        height: fit-content;
        padding: 40px 40px;
        border-radius: 30px;
        margin-bottom: 20px;
    }
    
    .intro_section .intro_content_emoji{
        font-size: 90px;
        height: 90px;
        width: 90px;
        line-height: 90px;
        margin: 0 auto;
    }
    
    .intro_section .intro_content_level{
        font-size: 20px;
        margin-top: 50px;
        line-height: 15px;
        width: fit-content;
        height: 20px;
        background-color: #d5e6f9;
        padding-right: 10px;
        margin: 20px auto;
    }
    
    .intro_section .intro_content_title{
        font-size: 20px;
        font-weight: 800;
        line-height: 30px;
        margin-top: 20px;
        height: 60px;
    }
    
    .intro_section .intro_content_text{
        font-size: 17px;
        line-height: 35px;
        margin-top: 10px;
    }
    
    .api_mark{
        background: hsl(0, 0%, 95%);
        width: 100%;
        height: 100px;
        position: relative;
        z-index: 80;
        top: 0px;
        text-align: center;
        padding-top: 20px;
    }
    
    .api_mark .sub_text_div_text_m{
        color: rgb(0, 0, 0);
        font-size: 20px;
        margin-top: 5px;
    }
    
    .api_mark .sub_text_div_text_m img{
        width: 30px;
        margin-right: 20px;
        margin-top: -7px;
    }

    .video_section{
        width: 100%;
        margin-top: 0px;
        margin-bottom: 130px;
    }
    
    .video_section .vidio_title{
        width: 100%;
    }
    
    .video_section .vidio_title .vidio_title_text{
        width: fit-content;
        font-size: 20px;
        background-color: #307bff;
        border-radius: 30px;
        padding: 20px 40px;
        color: white;
        margin: 0px auto;
    }
    
    .video_section .video_content{
        width: 100%;
        margin: 0px auto;
    }
    
    .video_section .video_content video{
        width: 100%;
    }
    
    .level_section{
        background-color: #f4f6f9;
        width: 100%;
        margin-top: 150px;
    }
    
    .level_section .level_section_title{
        width: calc(100% - 5%);
        position: relative;
        bottom: 50px;
        text-align: right;
        left: 0%;
    }

    .level_section .level_section_title .level_section_img{
        width: fit-content;
        float: right;
        font-size: 80px;
        line-height: 80px;
    }
    
    .level_section .level_title{
        width: fit-content;
        font-size: 35px;
        font-weight: 800;
        margin: 20px auto;
        margin-top: 60px;
        text-align: left;
    }
    
    .level_section .level_title .level_title_text{
        position: relative;
        z-index: 2;
    }
    
    .level_section .sub_title_div{
        width: 163px;
        height: 41px;
        background-color: #d5e6f9;
        margin-top: -31px;
        transform: rotate(-2deg);
        position: relative;
        z-index: 1;
    }
    
    .level_section .level_section_title .level_section_text{
        width: fit-content;
        font-size: 25px;
        font-weight: 400;
        background-color: rgb(236, 236, 236);
        border-radius: 100px 100px 0px 100px;
        padding: 30px 30px;
        color: black;
        float: right;
        margin-right: 20px;
    }
    
    .level_section .level_buttons{
        position: relative;
        width: 400px;
        margin: 0px auto;
        margin-top: 50px;
        height: 70px;
        background-color: white;
        border-radius: 80px;
    }
    
    .level_section .level_button{
        width: calc(100% / 2);
        height: 70px;
        float: left;
        text-align: center;
        line-height: 70px;
        border-radius: 80px;
        font-weight: 500;
        font-size: 30px;
        cursor: pointer;
    }
    
    .level_section .level_contents{
        width: 100%;
        margin: 0 auto;
    }
    
    .level_section .level_img{
        position: relative;
        z-index: 3;
        float: none;
        width: 300px;
        margin: 0px auto;
        left: 0;
        margin-top: 0px;
        top: 240px;
    }
    
    .level_section .level_img img{
        width: 100%;
    }
    
    .level_section .level_content{
        position: relative;
        float: none;
        z-index: 2;
        width: 90%;
        left: 5%;
        top: -520px;
        padding-top: 300px;
        padding-bottom: 200px;
        background-color: white;
        border-radius: 20px;
        box-shadow: 1px 1px 5px #e6edff;
    }
    
    .level_section .level_content_title{
        width: 93%;
        margin: 40px auto;
        position: relative;
        left: 0px;
        font-size: 27px;
        font-weight: 700;
        top: -280px;
        text-align: center;
        line-height: 44px;
    }
    
    .level_section .level_content_imgs{
        width: 80%;
        margin: 0px auto;
        position: relative;
        left: 0px;
        height: auto;
        top: 330px;
    }
    
    .level_section .level_content_imgs img{
        float: left;
        width: 25%;
        margin-left: 4%;
        margin-right: 4%;
    }
    
    .level_section .level_content_text{
        width: 80%;
        margin: 0px auto;
        position: relative;
        left: 0px;
        top: 370px;
        line-height: 30px;
        font-size: 20px;
        height: auto;
    }
}

@media screen and (max-width: 520px){
    .seenine_mark{
        margin-top: 70px;
        margin-bottom: -50px;
        background:#307bff;
        width: 100%;
        height: 250px;
        position: relative;
        z-index: 80;
        text-align: center;
        padding-top: 20px;
        padding-left: 10px;
        padding-right: 10px;
    }
    .hello_section{
        position: relative;
        z-index: 1;
        width: 80%;
        height: fit-content;
        margin: 0 auto;
        margin-top: 80px;
        padding-bottom: 0%;
        overflow: hidden;
    }

    .hello_section .hello_title_text{
        position: relative;
        z-index: 5;
        width: 100%;
        float: none;
        height: 160px;
        display: none;
    }

    .hello_section .title_text{
        width: 100%;
        font-family: 'Noto Sans KR', sans-serif;
        line-height: 127%;
        font-weight: 500;
        font-size: 26px;
        margin-top: 10%;
    }

    .hello_section .title_text{
        width: 100%;
        font-family: 'Noto Sans KR', sans-serif;
        line-height: 127%;
        font-weight: 500;
        font-size: 30px;
        margin-top: 27%;
    }

    .hello_section .sub_text_div{
        margin-top: 40px;
        font-size: 17px;
        font-family: 'NotoSansKR-Light';
        font-weight: 500;
        color: rgb(78, 78, 78);
        display: none;
    }

    .hello_section .hello_title_text_m{
        position: relative;
        z-index: 5;
        width: 100%;
        float: none;
        height: 160px;
        display: block;
        margin-top: 8%;
    }

    .hello_section .title_text_m{
        width: 100%;
        font-family: 'Noto Sans KR', sans-serif;
        line-height: 127%;
        font-weight: 500;
        font-size: 23px;
        margin-top: 10%;
    }

    .hello_section .sub_text_div_m{
        margin-top: 40px;
        font-size: 14px;
        line-height: 18px;
        font-family: 'NotoSansKR-Light';
        font-weight: 500;
        color: rgb(65, 65, 65);
        display: block;
        border-radius: 10px;
        padding: 10px 0px;
    }

    .hello_section .sub_text_div_m img{
        width: 30px;
        margin-top: 3px;
    }

    .hello_section .hello_title_text .sub_title_div{
        width: 73px;
        height: 31px;
        background-color: #d5e6f9;
        margin-top: -32px;
        transform: rotate(-2deg);
        position: relative;
        z-index: 1;
        left: 0px;
    }
    
    .hello_section .hello_title_img{
        position: relative;
        z-index: 4;
        width: 140%;
        float: none;
        height: fit-content;
        margin: 0 auto;
        margin-top: 0px;
        overflow: hidden;
        right: 20%;
    }

    .hello_section .hello_title_img video{
        width: 100%;
        float: none;
        margin-top: 3%;
    }

    .intro_section{
        width: 100%;
        margin-top: 80px;
        margin-bottom: 20px;
        height: fit-content;
        padding-bottom: 30px;
        background-color: #f4f6f9;
    }
    
    .intro_section .intro_title{
        width: calc(100% - 5%);
        position: relative;
        bottom: 40px;
        left: 5%;
    }

    .intro_section .intro_title .intro_title_img{
        float: left;
        margin-top: 10px;
    }
    
    .intro_section .intro_title .intro_title_img img{
        width: 50px;
    }
    
    .intro_section .intro_title .intro_title_text{
        width: fit-content;
        font-size: 17px;
        font-weight: 600;
        background-color: #307bff;
        border-radius: 100px 100px 100px 0;
        padding: 12px 25px;
        color: white;
    }
    
    .intro_section .intro_sub_title{
        width: fit-content;
        margin: 20px auto;
        font-size: 23px;
        font-weight: bold;
        margin-top: 20px;
    }

    .intro_section .intro_sub_title .intro_sub_title_text{
        position: relative;
        z-index: 2;
    }
    
    .intro_section .intro_sub_title .sub_title_div{
        width: 113px;
        height: 32px;
        background-color: #d5e6f9;
        margin-top: -25px;
        transform: rotate(-2deg);
        position: relative;
        z-index: 1;
        left: 40px;
    }
    
    .intro_section .intro_sub_sub_title{
        width: 85%;
        margin: 10px auto;
        font-size: 17px;
        margin-top: 20px;
        line-height: 28px;
        text-align: center;
    }
    
    .intro_section .intro_contents{
        width: 90%;
        height: fit-content;
        margin: 40px auto;
    }
    
    .intro_section .intro_content{
        width: 100%;
        float: none;
        margin-left: 0%;
        margin-right: 0%;
        background-color: white;
        height: fit-content;
        padding: 40px 40px;
        border-radius: 30px;
        margin-bottom: 20px;
    }
    
    .intro_section .intro_content_emoji{
        font-size: 90px;
        height: 90px;
        width: 90px;
        line-height: 90px;
        margin: 0 auto;
    }
    
    .intro_section .intro_content_level{
        font-size: 17px;
        margin-top: 50px;
        line-height: 15px;
        width: fit-content;
        height: 20px;
        background-color: #d5e6f9;
        padding-right: 10px;
        margin: 20px auto;
    }
    
    .intro_section .intro_content_title{
        font-size: 17px;
        font-weight: 800;
        line-height: 25px;
        margin-top: 20px;
        height: 60px;
    }
    
    .intro_section .intro_content_text{
        font-size: 15px;
        line-height: 25px;
        margin-top: 10px;
    }
    
    .api_mark{
        background: hsl(0, 0%, 95%);
        width: 100%;
        position: relative;
        z-index: 80;
        top: 17px;
        text-align: center;
        padding-top: 5px;
    }
    
    .api_mark .sub_text_div_text_m{
        color: rgb(0, 0, 0);
        font-size: 17px;
        margin-top: 15px;
    }
    
    .api_mark .sub_text_div_text_m img{
        width: 18px;
        margin-right: 10px;
        margin-top: -3px;
    }

    .video_section{
        width: 100%;
        margin-top: 0px;
        margin-bottom: 130px;
    }
    
    .video_section .vidio_title{
        width: 100%;
    }
    
    .video_section .vidio_title .vidio_title_text{
        width: fit-content;
        font-size: 20px;
        background-color: #307bff;
        border-radius: 30px;
        padding: 20px 40px;
        color: white;
        margin: 0px auto;
    }
    
    .video_section .video_content{
        width: 100%;
        margin: 0px auto;
    }
    
    .video_section .video_content video{
        width: 100%;
    }
    
    .level_section{
        background-color: #f4f6f9;
        width: 100%;
        margin-top: 70px;
    }
    
    .level_section .level_section_title{
        width: calc(100% - 15%);
        position: relative;
        bottom: 50px;
        text-align: right;
        left: 10%;
    }
    
    .level_section .level_title{
        width: fit-content;
        font-size: 25px;
        font-weight: 800;
        margin: 20px auto;
        margin-top: 40px;
        text-align: left;
    }

    .level_section .level_section_title .level_section_img{
        width: fit-content;
        float: right;
        font-size: 40px;
        line-height: 80px;
    }
    
    .level_section .level_title .level_title_text{
        position: relative;
        z-index: 2;
    }
    
    .level_section .sub_title_div{
        width: 163px;
        height: 41px;
        background-color: #d5e6f9;
        margin-top: -31px;
        transform: rotate(-2deg);
        position: relative;
        z-index: 1;
    }
    
    .level_section .level_section_title .level_section_text{
        width: fit-content;
        font-size: 16px;
        font-weight: 400;
        background-color: rgb(236, 236, 236);
        border-radius: 100px 100px 0px 100px;
        padding: 10px 20px;
        color: black;
        float: right;
        margin-right: 20px;
        margin-top: 20px;
    }
    
    .level_section .level_buttons{
        position: relative;
        width: 60%;
        margin: 0px auto;
        margin-top: 50px;
        height: 50px;
        background-color: white;
        border-radius: 80px;
    }
    
    .level_section .level_button{
        width: calc(100% / 2);
        height: 50px;
        float: left;
        text-align: center;
        line-height: 50px;
        border-radius: 80px;
        font-weight: 500;
        font-size: 15px;
        cursor: pointer;
    }
    
    .level_section .level_contents{
        width: 100%;
        margin: 0 auto;
    }
    
    .level_section .level_img{
        position: relative;
        z-index: 3;
        float: none;
        width: 180px;
        margin: 0px auto;
        left: 0;
        margin-top: 0px;
        top: 210px;
    }
    
    .level_section .level_img img{
        width: 100%;
    }
    
    .level_section .level_content{
        position: relative;
        float: none;
        z-index: 2;
        width: 90%;
        left: 5%;
        top: -330px;
        height: auto;
        padding-top: 300px;
        padding-bottom: 200px;
        background-color: white;
        border-radius: 20px;
        box-shadow: 1px 1px 5px #e6edff;
    }
    
    .level_section .level_content_title{
        width: 80%;
        margin: 40px auto;
        position: relative;
        left: 0px;
        font-size: 25px;
        font-weight: 700;
        top: -290px;
        text-align: center;
        line-height: 35px;
    }
    
    .level_section .level_content_imgs{
        width: 80%;
        margin: 0px auto;
        position: relative;
        left: 0px;
        height: auto;
        top: 110px;
    }
    
    .level_section .level_content_imgs img{
        float: left;
        width: 25%;
        margin-left: 4%;
        margin-right: 4%;
    }
    
    .level_section .level_content_text{
        width: 80%;
        margin: 0px auto;
        position: relative;
        left: 0px;
        top: 140px;
        line-height: 30px;
        font-size: 20px;
        height: auto;
    }
}