body{padding:0;margin: 0;}
.notfound{left:35%;top:5%; width: 468px;height: 749px;background: url(../404.png) no-repeat center top;margin: 20px auto;position: absolute;}
.gohome{display: block;width: 210px;height: 57px;margin:0 auto;margin-top: 202px;background: url(../gh.png) center no-repeat; -webkit-transition: all 400ms; transition: all 400ms;}
.gohome:hover{ background: url(../gh_hover.png) center no-repeat;}