<div class="alert_fullbg"></div>样式：html,htmlbody { _background:url(/css/about:blank) #F4F5EF; _background-attachment:fixed}body { height:100%}.alert_fullbg {height:100%; width:100%; top:0; left:0; position:fixed; _position:absolute; z-index:100000; filter:alpha(opacity=... Read More