@media only screen and (max-width:769px) { /*手机尺寸*/ 
 /* 通用样式 start */
 html { font-size: 100px; } 
 body { font-family: "Microsoft YaHei", serif;background-size: 100% !important; } 
 .container { width: 100%; } 
 /* 版心 */
 .clearfix:after { content: "."; display: block; height: 0; clear: both; visibility: hidden; } 
 /* 清除浮动 */
 .bg-container { padding: 0 0.98rem; height: 13.34rem; background: url(./bg.png) no-repeat; background-size: 100%; overflow: hidden; } 
.logo { margin-top: 1.65rem; width: 100%;height: 0.9rem; } 
.logo img { width: 5.60rem; } 
.gkb { width: 100%; height: 0.95rem; margin-top: 6.50rem; } 
.gkb-a,.gkb-ios { width: 2.70rem; background-color: #fff; font-size: 0.36rem; height: 0.92rem; line-height: 0.92rem; text-align: center; border-radius: 0.45rem; } 
.gkb-a { float: left; } 
.gkb-ios { float: right; } 
.gkb a { color: #b4760d; } 

body, .layer::before { background: url("./bg.png") no-repeat; } 
.layer{ width: 100%; height: 100%;position: absolute; top: 0; bottom: 0; left: 0; right: 0; line-height: 2; margin: auto; border-radius: 5px; background: rgba(0, 0, 0, .3); box-shadow: 3px 3px 6px 3px rgba(0, 0, 0, .3); overflow: hidden;} 
.layer::before { content: ''; position: absolute; top: 0; bottom: 0; left: 0; right: 0; filter: blur(20px); z-index: -1; margin: -30px; } 

.advanced_box { margin-top: 0.2rem; width: 100%; height: 4.8rem; background: url(./mb.png) no-repeat; background-size: 100%; position: fixed; left: 0; top: 0; z-index: 100; } 
.advanced_box .close { width: 0.55rem; height: 0.55rem; margin-top: 3.5rem; margin-left: 46%; } 
 }
 
 @media only screen and (
 max-width:768px) { /*平板，PC尺寸*/ }