.cs_shi_class {
}

a, a:hover, a:visited, a:focus, a:active {
    text-decoration: none;
    color: black;
    cursor: pointer;
}

.fl {
    float: left;
}

.fr {
    float: right;
}

img {
    object-fit: fill; max-width: 100%;
}

.text_red {
    color: red;
}

.hide {
    display: none;
}

.show {
    display: block;
}

.cb {
    clear: both
}

ul, ol {
    list-style: none;
}

.aa {
    float: left;
    color: #666;
    margin: 0 9px;
    font-size: 14px;
    cursor: pointer;
}

.videolist {
    position: relative;
    float: left;
    width: 400px;
    height: 250px;
    border-radius: 5px;
}

.videolist .introduce_video_bg {
   height: 100%;
    width: 100%;
}

.videolist:hover {
    cursor: pointer;
}

.video_mengban {
    z-index: 99999999;
    display: none;
    position: fixed;
    top: 0px;
    left: 0px;
    background-color: rgba(0, 0, 0, 0.4);
    width: 100%;
    height: 100%
}

.videoed {
    width: 50px;
    height: 50px;
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    z-index: 99;
    border-radius: 100%;
}

.videos {
    display: none;
    margin: 0 auto;
    z-index: 100;
    width: 1200px;
    height: 900px;
    position: relative;
}

.vclose1 {
    position: fixed;
    right: 2%;
    top: 2%;
    border-radius: 100%;
    cursor: pointer;
}

#video {
    width: 100%;
    margin-top: 100px
}
table{
    width:100%;
}