@charset "utf-8";
body{
    overflow: hidden;
    background: #fff;
}
.help-c>h1{
    font-size: 36px;
    color:#1da7b5;
    text-align: center;
    margin: 11% auto 30px;
}
.help-c>p{
    text-align: center;
    margin-bottom: 70px;
    font-size: 20px;
    line-height: 33px;
    color:#4e5f75;
}
.help-content{
    width: 1200px;
    margin: 0 auto;
}
.help-content>li{
    position: relative;
    width: 400px;
    height: 223px;
    float: left;
    border-top:2px #dfdeec solid;
    border-bottom:2px #dfdeec solid;
}
.help-content>li>i{
    display: block;
    height: 90px;
    width: 90px;
    background: url("../../statics/images/helpC.png") no-repeat;
    margin: 30px auto 10px;
    cursor: pointer;
}
.help-content>li:nth-of-type(2)>i{
    background-position: -90px 0;
}
.help-content>li:nth-of-type(3)>i{
    background-position: -180px 0;
}
.help-content>li>p{
    text-align: center;
    color:#1da7b5 ;
    font-size: 14px;
    cursor: pointer;
}
.line{
    display: block;
    position: absolute;
    right: 0;
    top:-6px;
    width: 2px;
    height: 242px;
    background: #dfdeec;
}

.video-box{
    background-color: rgba(18, 19, 18, 0.62);
    position: absolute;
    top:0;
    bottom: 0;
    left: 0;
    right: 0;
    display: none;
}
.closed-video{
    font-size: 33px;
    position: absolute;
    right: 8px;
    top: 1px;
    color: #fff;
}
.closed-video:hover{
    color: #F60;
}
.video-pos>div:nth-of-type(1){
    background: rgba(219, 220, 214, 0.29);
    background:-moz-linear-gradient(top, rgba(0,0,0,0.6), rgba(255,255,255,0));
    background:-webkit-gradient(linear, 0 0, 0 bottom, from(rgba(0,0,0,0.6)), to(rgba(255,255,255,0)));
    background:-o-linear-gradient(top,  rgba(0,0,0,0.6), rgba(255,255,255,0));
    height: 28px;
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 999;
    display: none;
}
.video-pos:hover>div:nth-of-type(1){
    display: block;
}
a:hover{
    text-decoration: none;
    color: #000;
}
.video-box .video-pos{
    position: absolute;
    top: 50%;
    left: 50%;
    margin: -275px 0 0 -500px;
}