.server{position:relative}.server .part1,.server .part2,.server .part3{width:100%;font-size:0}.server div img{width:100%}.server .part4{position:relative;width:100%;font-size:0}.server .part4 .imgBox{position:absolute;left:50%;top:30%;transform:translateX(-50%);text-align:center;width:100%}.server .part4 .imgBox a img{width:15vw;margin:0 20px;cursor:pointer}.server .part5{position:relative;width:100%;font-size:0}.server .part5 .btnBox{position:absolute;left:50%;bottom:28%;transform:translateX(-50%);text-align:center;cursor:pointer;width:100%}.server .part5 .btnBox img{width:14vw}.home-butt{position:absolute;right:20px;top:20px;z-index:1000;display:flex}.home-butt>a{margin-left:8px}@media only screen and (max-width:900px){.server .part4 .imgBox{width:100%;display:flex}.server .part4 .imgBox a{flex-grow:1}.server .part4 .imgBox a img{width:100%;margin:0}.server .part5 .btnBox{bottom:10%}.server .part5 .btnBox img{width:40%}}