body {background: #f8f8f8;}
.sub_top {padding:280px 0px 20px; border-bottom:1px solid #ddd; background: #fff;}
.sub_title {margin:0px auto 300px;}

.sc_1 {background: #F4F4FA; padding:150px 0px 250px; text-align: center;}
.sc_1 span {font-size:24px; font-weight: var(--weight_medium); display: block; margin-bottom:10px; color:var(--light_blue)}
.sc_1 h4 {font-size:50px; font-weight:var(--weight_bold); margin-bottom:80px;}
.sc_1 .video_box {width:fit-content; margin:0 auto 80px; padding:28px; background: #fff; box-shadow: rgba(149, 157, 165, 0.2) 0px 8px 24px; border-radius: 15px;}


@media (max-width: 1280px){
    .sc_1 .video_box {width: 100%; box-sizing: border-box;}
    .sc_1 .video_box img {width: 100%;}
}

@media (max-width: 768px){
    .sub_top {padding:80px 0px 10px;}
    .sub_title {margin:0px auto 80px;}
    .sub_title h3 {font-size:35px;}

    .sc_1  {padding:80px 0px;}
    .sc_1 span {font-size:18px;}
    .sc_1 h4 {font-size:30px; margin-bottom:50px;}
    .sc_1 .video_box {padding:10px; margin-bottom:50px;}
}