.div-opacity{background:#000;width:200px;height:100px;padding:5px;color:red;filter:alpha(Opacity=60);-moz-opacity:.6;opacity:.6}.main_div{position:absolute;right:30px;width:100%}.float_div{position:absolute;right:5px;top:60px;filter:alpha(Opacity=100);-moz-opacity:1;opacity:1}.option{height:700px;overflow:auto}.affix-container{z-index:99}