摘要：
loading 加载提示 ······ 透明遮罩 居中 body{margin: 0;font-size: 12px;line-height: 100%;font-family: Arial, sans-serif;}.background {display: block;width: 100%;height: 100%;opacity: 0.4;filter: alpha(opacity=40);background:while;position: absolute;top: 0;left: 0;z-index: 2000;}.pr 阅读全文