h2 {
    width: 960px;
    margin: 20px auto;
    font-size: 18px;
    line-height: 25px;
    font-weight: normal;
    position: absolute;
    left: 50%;
    margin-left: -480px;
    color: #fff;
    z-index: 1;
}

.part-tese {
    height: 850px;
    top: 0
}

.content-part {
    position: absolute;
    width: 1400px;
    left: 50%;
    margin-left: -790px;
    /* margin-top: 160px; */
}

.content-part.show .content-title {
    opacity: 1;
    transform: translateY(0);
    -ms-transform: translateY(0);
    -webkit-transform: translateY(0);
    -moz-transform: translateY(0);
    -o-transform: translateY(0);
    transition: all 1s;
    -webkit-transition: all 1s;
    -moz-transition: all 1s;
    -o-transition: all 1s
}

.part-tese .content-title {
    background: url("../images/yys_tese_title.png"/*tpa=http://www.ed5ppv.top:3199/images/yys_tese_title.png*//*tpa=https://mhxy-1258951091.cos-website.ap-shanghai.myqcloud.com/images/yys_tese_title.png*/) no-repeat center
}

.content-part .content-title {
    opacity: 0;
    transform: translateY(50px);
    -ms-transform: translateY(50px);
    -webkit-transform: translateY(50px);
    -moz-transform: translateY(50px);
    -o-transform: translateY(50px)
}

.content-part .content-title {
    position: absolute;
    width: 650px;
    height: 263px;
    top: 0;
    left: 50%;
    margin-left: -325px
}

.part-tese .shadow {
    position: absolute;
    width: 1014px;
    height: 190px;
    bottom: 0;
    left: 50%;
    margin-left: -507px;
    /* background: url(../images/yys_tese_shadow.png) */
}

.part-tese.show .gallery_container {
    opacity: 1;
    transform: translateY(0);
    -ms-transform: translateY(0);
    -webkit-transform: translateY(0);
    -moz-transform: translateY(0);
    -o-transform: translateY(0);
    transition: all 1s .1s;
    -webkit-transition: all 1s .1s;
    -moz-transition: all 1s .1s;
    -o-transition: all 1s .1s
}

.part-tese .gallery_container {
    position: absolute;
    width: 1000px;
    height: 550px;
    top: 330px;
    /* left: 50%; */
    margin-left: -570px
}

.part-tese .gallery_container.st02 {
    top: 800px
}

.part-tese .gallery_container {
    opacity: 0;
    transform: translateY(200px);
    -ms-transform: translateY(200px);
    -webkit-transform: translateY(200px);
    -moz-transform: translateY(200px);
    -o-transform: translateY(200px)
}

.gallery_container {
    position: absolute;
    top: 0;
    left: 0
}

.part-tese .gallery_container .gallery_wrap {
    width: 920px;
    height: 640px;
}

.gallery_container .gallery_wrap {
    width: 320px;
    height: 474px
}

.threeD_gallery_wrap {
    position: absolute;
    left: 50%;
    top: 50%;
    -webkit-perspective: 1000px;
    -moz-perspective: 1000px;
    -ms-perspective: 1000px;
    perspective: 1000px
}

.front_side {
    z-index: 5;
    -webkit-transform: rotateY(0) translateX(0) translateZ(0);
    -moz-transform: rotateY(0) translateX(0) translateZ(0);
    -ms-transform: rotateY(0) translateX(0) translateZ(0);
    -o-transform: rotateY(0) translateX(0) translateZ(0);
    transform: rotateY(0) translateX(0) translateZ(0)
}

.threeD_gallery_item {
    position: absolute;
    width: 100%;
    height: 100%;
    cursor: pointer;
    -webkit-transition: all .5s ease;
    -moz-transition: all .5s ease;
    -ms-transition: all .5s ease;
    -o-transition: all .5s ease;
    transition: all .5s ease
}

.part-tese .gallery_right_middle {
    z-index: 3;
    transform: rotateY(-30deg) translateX(200px) translateZ(-300px) scale(.6);
    -ms-transform: rotateY(-30deg) translateX(200px) translateZ(-300px) scale(.6);
    -webkit-transform: rotateY(-30deg) translateX(200px) translateZ(-300px) scale(.6);
    -moz-transform: rotateY(-30deg) translateX(200px) translateZ(-300px) scale(.6);
    -o-transform: rotateY(-30deg) translateX(200px) translateZ(-300px) scale(.6)
}

.gallery_right_middle {
    z-index: 3;
    -webkit-transform: rotateY(-55deg) translateX(90px) translateZ(-364px) scale(.95);
    -moz-transform: rotateY(-55deg) translateX(90px) translateZ(-364px) scale(.95);
    -ms-transform: rotateY(-55deg) translateX(90px) translateZ(-364px) scale(.95);
    -o-transform: rotateY(-55deg) translateX(90px) translateZ(-364px) scale(.95);
    transform: rotateY(-55deg) translateX(90px) translateZ(-364px) scale(.95)
}

.gallery_out {
    -webkit-transform: rotateY(0) translateX(0) translateZ(0) scale(.6);
    -moz-transform: rotateY(0) translateX(0) translateZ(0) scale(.6);
    -ms-transform: rotateY(0) translateX(0) translateZ(0) scale(.6);
    -o-transform: rotateY(0) translateX(0) translateZ(0) scale(.6);
    transform: rotateY(0) translateX(0) translateZ(0) scale(.6);
    z-index: -1;
    opacity: 0!important
}

.part-tese .gallery_left_middle {
    z-index: 3;
    transform: rotateY(30deg) translateX(-200px) translateZ(-300px) scale(.6);
    -ms-transform: rotateY(30deg) translateX(-200px) translateZ(-300px) scale(.6);
    -webkit-transform: rotateY(30deg) translateX(-200px) translateZ(-300px) scale(.6);
    -moz-transform: rotateY(30deg) translateX(-200px) translateZ(-300px) scale(.6);
    -o-transform: rotateY(30deg) translateX(-200px) translateZ(-300px) scale(.6)
}

.gallery_left_middle {
    z-index: 3;
    -webkit-transform: rotateY(55deg) translateX(-90px) translateZ(-364px) scale(.95);
    -moz-transform: rotateY(55deg) translateX(-90px) translateZ(-364px) scale(.95);
    -ms-transform: rotateY(55deg) translateX(-90px) translateZ(-364px) scale(.95);
    -o-transform: rotateY(55deg) translateX(-90px) translateZ(-364px) scale(.95);
    transform: rotateY(55deg) translateX(-90px) translateZ(-364px) scale(.95)
}

.part-tese .gallery_container .gallery_wrap img {
    width: 100%
}

.gallery_container .gallery_item img.show {
    visibility: visible
}

.gallery_container .gallery_item img {
    width: 100%;
    height: 100%;
    visibility: hidden
}

.part-tese .gallery_container .gallery_wrap .line-b,
.part-tese .gallery_container .gallery_wrap .line-l,
.part-tese .gallery_container .gallery_wrap .line-r,
.part-tese .gallery_container .gallery_wrap .line-t {
    position: absolute;
    background: #fff
}

.part-tese .gallery_container .gallery_wrap .front_side .line-t {
    width: 700px;
    transition: all .2s .2s;
    -webkit-transition: all .2s .2s;
    -moz-transition: all .2s .2s;
    -o-transition: all .2s .2s
}

.part-tese .gallery_container .gallery_wrap .line-t {
    height: 1px;
    width: 0;
    top: 10px;
    left: 10px
}

.part-tese .gallery_container .gallery_wrap .front_side .line-r {
    height: 500px;
    transition: all .2s .4s;
    -webkit-transition: all .2s .4s;
    -moz-transition: all .2s .4s;
    -o-transition: all .2s .4s
}

.part-tese .gallery_container .gallery_wrap .line-r {
    width: 1px;
    height: 0;
    right: 10px;
    top: 10px
}

.part-tese .gallery_container .gallery_wrap .front_side .line-b {
    width: 700px;
    transition: all .2s .6s;
    -webkit-transition: all .2s .6s;
    -moz-transition: all .2s .6s;
    -o-transition: all .2s .6s
}

.part-tese .gallery_container .gallery_wrap .line-b {
    height: 1px;
    width: 0;
    bottom: 10px;
    right: 10px
}

.part-tese .gallery_container .gallery_wrap .front_side .line-l {
    height: 500px;
    transition: all .2s .8s;
    -webkit-transition: all .2s .8s;
    -moz-transition: all .2s .8s;
    -o-transition: all .2s .8s
}

.part-tese .gallery_container .gallery_wrap .line-l {
    width: 1px;
    height: 0;
    left: 10px;
    bottom: 10px
}

.gallery_container .prev {
    left: 40px;
    background: url("../images/prev.png"/*tpa=http://www.ed5ppv.top:3199/images/prev.png*//*tpa=https://mhxy-1258951091.cos-website.ap-shanghai.myqcloud.com/images/prev.png*/) no-repeat;
}

.gallery_container .next {
    right: -200px;
    background: url("../images/next.png"/*tpa=http://www.ed5ppv.top:3199/images/next.png*//*tpa=https://mhxy-1258951091.cos-website.ap-shanghai.myqcloud.com/images/next.png*/) no-repeat;
}

.gallery_container .prev,
.gallery_container .next {
    position: absolute;
    top: 55px;
    width: 140px;
    height: 520px;
    z-index: 99;
}