.top_position {
    width: 1200px;
    position: relative;
    margin: 26px auto;
    color: #999999;
    font-size: 14px;
}
.top_position span {
    padding-right: 4px;
}
.top_position span, .top_position a {
    display: inline-block;
    font-size: 14px;
    color: #999999;
    text-decoration: none;
}
.top_position span, .top_position a {
    display: inline-block;
    font-size: 14px;
    color: #999999;
    text-decoration: none;
}
.w_1200 {
    width: 1200px;
    margin: 0 auto;
    position: relative;
}
.c {
    display: block;
    zoom: 1;
}
.video-main {
    width: 100%;
    box-sizing: border-box;
    -webkit-box-sizing: border-box;
    padding: 34px 20px 10px 20px;
    background-color: #ffffff;
}
.video-main ul {
    width: 100%;
}
.video-main ul li {
    width: 560px;
    float: left;
    padding: 5px;
    box-shadow: 0px 0px 20px 1px #ccc;
    overflow: hidden;
    background-color: #ffffff;
    box-sizing: border-box;
    -webkit-box-sizing: border-box;
    margin: 0 38px 30px 0;
}
.video-main ul li .video-img {
    width: 274px;
    height: 200px;
    float: left;
    margin-right: 26px;
    position: relative;
    overflow: hidden;
}
.video-main ul li .video-img img {
    display: block;
    border: none;
    width: 100%;
    height: 100%;
    transition: all .6s;
    -moz-transition: all .6s;
    -webkit-transition: all .6s;
    -o-transition: all .6s;
}
.video-main ul li .video-img .video, .paview-ul ul li .paview-img .video, .index-video ul li .video {
    width: 44px;
    height: 44px;
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    right: 0;
    margin: auto;
    background: rgba(0,0,0,0.5);
    background-position-x: 0%;
    background-position-y: 0%;
    background-repeat: repeat;
    background-image: none;
    background-size: auto;
    filter: alpha(opacity:50);
    zoom: 1;
    border-radius: 35px;
    background-image: url(../images/video.png);
    background-repeat: no-repeat;
    background-position: 15px center;
    background-size: 20px;
    border-radius: 100%;
    border: 2px solid #fff;
}
.video-main ul li .video-text {
    padding-top: 20px;
    width: 250px;
    float: right;
}
.video-main ul li .video-text h2 {
    font-size: 24px;
    color: #333;
    font-weight: bold;
    margin-bottom: 14px;
    overflow: hidden;
    white-space: nowrap;
    text-overflow: ellipsis;
}
.video-main ul li .video-text p {
    color: #444444;
    font-size: 16px;
    line-height: 26px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.video-main ul li .video-text .video-btns {
    width: 150px;
    height: 42px;
    line-height: 42px;
    font-size: 18px;
    color: #fff;
    text-align: center;
    background: -webkit-gradient(linear, 100% 0, 0 0, from(#4F8CED), to(#68CAEE));
    background: -webkit-linear-gradient(right, #4F8CED, #68CAEE);
    background: -moz-linear-gradient(right, #4F8CED, #68CAEE);
    background: -o-linear-gradient(right, #4F8CED, #68CAEE);
    background: linear-gradient(right, #4F8CED, #68CAEE);
    border-radius: 30px;
    text-align: center;
    margin-top: 28px;
}
.c::after {
    content: ".";
    display: block;
    visibility: hidden;
    height: 0;
    clear: both;
}
.page_list {
    display: flex;
    width: auto;
    margin: 0 auto;
    align-items: center;
    justify-content: center;
    text-align: right;
    padding-bottom: 40px;
    padding-top: 30px;
}
.page_list ul {
    overflow: hidden;
}