.video .head{background:url(../img/servebg.fc497e17.jpg) no-repeat;background-size:100% 100%;text-align:center;margin:auto;color:#fff;padding:50px 0}.video .head .stitle{font-size:32px;padding:90px 0 30px}.video .head .stitle2{font-size:16px}.vbox{padding:90px 0 30px}.vbox .hqueation{font-size:32px;color:#333}.vbox .hqueationzm{border-bottom:2px solid #ccc;padding:10px 0;color:#999}.vbox .item:nth-child(3n){margin-right:0}.vbox .item{float:left;width:386px;margin-bottom:20px;margin-right:20px;height:346px;background:#000}.vbox .item video{width:100%;height:100%}@media only screen and (max-width:769px){.video .head .stitle{font-size:26px;padding:56px 0 30px}.vbox{padding:22px 10px 30px}.vbox .hqueation{font-size:20px}.vbox .item{width:100%;margin:10px 0}}