修改download样式，上传ico图标

css/common.css

@@ -94,7 +94,7 @@ input{ outline:none;}
.appstore{width:1000px;color: #696969;text-align: center;margin:40px auto;position:relative;}
.kexiu_logo{margin: 0 20px; position: relative;text-align: left;}
.kexiu_logo img{ width:300px;}
.appstoreBody{margin:20px 0;}
.appstoreBody{margin:8% 0;}
.appstore .computer-image {width:700px;height:510px; background: url(../images/download_windows.png) center center no-repeat;background-size:100% 100%;}
.appstore .subhead{font-size: 16px;line-height: 40px;color: #888;}
.downloadBox{}