ie hover z-index没效果_html/css_WEB-ITnose

<style>.g1gg{width:950px; height:30px; position:relative; z-index:10;}a.g1g{width:109px; height:30px;position:absolute; left:0px; top:0px; z-index:10display:block;background:url("http://img03.taobaocdn.com/imgextra/i3/472096346/T2HZqrXbBaXXXXXXXX_!!472096346.jpg");}a.g1g:hover{width:110px;background:url("http://img02.taobaocdn.com/imgextra/i2/472096346/T2ar1rXaBaXXXXXXXX_!!472096346.jpg");z-index:999;}a.g2g{width:162px; height:30px;position:absolute; left:108px; top:0px;z-index:10;display:block;background:url("http://img04.taobaocdn.com/imgextra/i4/472096346/T2yBirXiBaXXXXXXXX_!!472096346.jpg");}a.g2g:hover{background:url("http://img04.taobaocdn.com/imgextra/i4/472096346/T2hCqrXX0XXXXXXXXX_!!472096346.jpg");z-index:999;}</style><div class="g1gg"><a class="g1g" href="#"></a><a class="g2g" href="#"></a></div>