.index_video{
    padding: 80px 0;
}
.index_video .content{
    width: 1200px;
    margin: 0 auto;
}
.index_video .content .theme{
    margin-bottom: 20px;
}
.index_video .content .theme h1{
    font-size: 28px;
    color: #333333;
    margin: 0;
    font-weight: normal;
}
.index_video .content .theme h1{
    font-size: 28px;
    color: #333333;
    margin: 0;
    font-weight: normal;
}
.index_video .content .theme p{
    font-size: 18px;
    color: #dddddd;
    margin: 0;
    text-transform: uppercase;
}
.index_video .content .swiper-slide{
    width: 100%;
}
.index_video .content .swiper-slide .list{
    width: 100%;
    position: relative;
    padding-bottom: 50%;
    overflow: hidden;
    margin-bottom: 50px;
}
.index_video .content .swiper-slide .list:last-child{
    margin-bottom: 0;
}
.index_video .content .swiper-slide .list .img{
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}
.index_video .content .swiper-slide .list .img img{
    width: 100%;
}
.index_video .content .swiper-slide .list .video{
    width: 100%;
    height: 100%;
    position: absolute;
    top: 0;
    left: 0;
    display: none;
}
.index_video .content .swiper-slide .list .video source{
    width: 100%;
}
.index_video .content .swiper-slide .list .play{
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50% , -50%);
    cursor: pointer;
}
.index_video .content .swiper-slide .list .play span{
    display: block;
    width: 50px;
    height: 50px;
    box-shadow: 0 0 5px #ccc;
    border-radius: 50%;
    position: relative;
    z-index: 5;
    transition: 0.3s;
}

.index_video .content .swiper-slide .list .play:hover span{
    box-shadow: 0 0 30px #ccc;
}

.index_video .content .swiper-slide .list .play span::before{
    content: '';
    width: 100%;
    height: 100%;
    position: absolute;
    clip-path: polygon(20% 0, 100% 50%, 20% 100%);
    background: #5c5c5c;
    transform: scale(0.4);
}
.index_video .content .swiper-container .swiper-button-next{
    width: 40px;
    height: 40px;
    position: absolute;
    right: 20px;
    top: 50%;
    background: url(../images/arrow-rightred.png) no-repeat;
    transform: translateY(-50%);
    -webkit-transform: translateY(-50%);
    -moz-transform: translateY(-50%);
    -ms-transform: translateY(-50%);
    -o-transform: translateY(-50%);
}
.index_video .content .swiper-container .swiper-button-prev{
    width: 40px;
    height: 40px;
    position: absolute;
    left: 20px;
    top: 50%;
    background: url(../images/arrow-leftred.png) no-repeat;
    transform: translateY(-50%);
    -webkit-transform: translateY(-50%);
    -moz-transform: translateY(-50%);
    -ms-transform: translateY(-50%);
    -o-transform: translateY(-50%);
}