.right .mark{
    margin-top: 20px;
    margin-left: 20px;
    font-size: 18px;
    border-left: 4px solid #34A0D5;
    padding-left: 10px;
    font-weight: bold;
}
.mainNews li{
    width: 300px;
    margin: 20px auto;
    border-bottom: 1px solid #e1e1e1;
    cursor: pointer;
}
.mainNews li .top img{
    width: 300px;
    height: 150px;
}
.mainNews li .bottom{
    margin-top: 10px;
    margin-bottom: 20px;
    font-size: 18px;
}
.mainNews li .bottom:hover{
    color: #34A0D5;
}
.mainNews .videoItem .top{
    position: relative;
}
.mainNews .videoItem .top .play{
    position: absolute;
    width: 30px;
    height: 30px;
    left: 135px;
    top: 60px;
    background-image: url("../../img/icon_play_30.png");
    background-repeat: no-repeat;
    background-size: 30px;
}
.mainNews .videoItem .top:hover .play{
    background-image: url("../../img/icon_play_30_hl.png");
}