#youngchang-body{background:#f3f3f3;height:auto;overflow:hidden;}
#youngchang-banner{margin-bottom:50px;height:auto;overflow: hidden;}
#youngchang-banner img{width:100%;height:auto;}
#youngchang-banner .swiper-slide{position: relative;}
#youngchang-banner .videobtn{position:absolute;width:56px;height:56px;top:0;left:0;z-index:2;}
#youngchang-banner .videobtn1{top:227px;left:603px;background: url(../images/youngchang/video-btn2.png) no-repeat;}
#youngchang-banner .videobtn2{top:278px;left:95px;background: url(../images/youngchang/video-btn2.png) no-repeat;}
#youngchang-banner .videobtn3{top:639px;left:345px;background: url(../images/youngchang/video-btn.png) no-repeat;}
.swiper-pagination-bullet{margin:0 10px!important;width:39px!important;height:6px!important;opacity:1!important;border-radius:0!important;background:#bfbfbf!important;}
.swiper-pagination-bullet-active{background:#e22924!important;}

.youngchang-index-block{margin:0 45px 45px;display:flex;justify-content: center;flex-direction:column;height:auto;border-radius:18px;overflow:hidden;}
.youngchang-index-block-img{max-width:100%;height:auto;}
.youngchang-index-block-title{display:flex;flex-direction: row;justify-content: center;align-items: center;height:137px;background:#fff;line-height:1em;font-size:42px;color:#333;font-weight:500;}
.about-block1{height:1123px;background:url(../images/youngchang/about-img1.jpg) no-repeat;background-size:100% 100%;overflow: hidden;}
.about-block2{height:1123px;background:url(../images/youngchang/about-img2.jpg) no-repeat;background-size:100% 100%;overflow: hidden;}
.about-block3{height:1124px;background:url(../images/youngchang/about-img3.jpg) no-repeat;background-size:100% 100%;overflow: hidden;}
.about-block4{height:1124px;background:url(../images/youngchang/about-img4.jpg) no-repeat;background-size:100% 100%;overflow: hidden;}
.about-block5{height:1124px;background:url(../images/youngchang/about-img5.jpg) no-repeat;background-size:100% 100%;overflow: hidden;}
.about-block-img1{display:block;margin:80px auto 0;width:532px;}
.about-block-img2{display:block;margin:135px auto 0;width:531px;}
.about-block-img3{display:block;margin:155px auto 0;width:474px;}
.about-block-img4{display:block;margin:515px auto 0;width:487px;}
.about-block-img5{display:block;margin:387px auto 0;width:470px;}

.gongyi-block1{height:1123px;background:url(../images/youngchang/gongyi-img1.jpg) no-repeat;background-size:100% 100%;overflow: hidden;}
.gongyi-block2{height:1124px;background:url(../images/youngchang/gongyi-img2.jpg) no-repeat;background-size:100% 100%;overflow: hidden;}
.gongyi-block3{height:1124px;background:url(../images/youngchang/gongyi-img3.jpg) no-repeat;background-size:100% 100%;overflow: hidden;}
.gongyi-block4{height:1124px;background:url(../images/youngchang/gongyi-img4.jpg) no-repeat;background-size:100% 100%;overflow: hidden;}
.gongyi-block5{height:1124px;background:url(../images/youngchang/gongyi-img5.jpg) no-repeat;background-size:100% 100%;overflow: hidden;}
.gongyi-block6{height:1124px;background:url(../images/youngchang/gongyi-img6.jpg) no-repeat;background-size:100% 100%;overflow: hidden;}
.gongyi-block7{height:1124px;background:url(../images/youngchang/gongyi-img7.jpg) no-repeat;background-size:100% 100%;overflow: hidden;}
.gongyi-block8{height:1123px;background:url(../images/youngchang/gongyi-img8.jpg) no-repeat;background-size:100% 100%;overflow: hidden;}
.gongyi-block9{height:1125px;background:url(../images/youngchang/gongyi-img9.jpg) no-repeat;background-size:100% 100%;overflow: hidden;}
.gongyi-block-img1{display:block;margin:83px auto 0;width:539px;}
.gongyi-block-img2{display:block;margin:510px 0 0 149px;width:533px;}
.gongyi-block-img3{display:block;margin:155px auto 0;width:653px;}
.gongyi-block-img4{display:block;margin:110px 0 0 100px;width:588px;}
.gongyi-block-img5{display:block;margin:155px auto 0;width:599px;}
.gongyi-block-img6{display:block;margin:120px 0 0 220px;width:472px;}
.gongyi-block-img7{display:block;margin:103px 0 0 114px;width:565px;}
.gongyi-block-img8{display:block;margin:93px auto 0;width:426px;}
.gongyi-block-img9{display:block;margin:145px auto 0;width:660px;}

#videobox{display:none;position:fixed;top:0;bottom:0;padding-top:20%;z-index:10;justify-content:center;width:100%;height:100%;background:rgba(0,0,0,.6)}