.portfolio-item:hover .zoom-icon {
    opacity:1;
    background: transparent;
    /* IE 8 */
    -ms-filter:"progid:DXImageTransform.Microsoft.Alpha(Opacity=90)";
    /* IE 5-7 */
    filter: alpha(opacity=90);
    margin-top:0px;
    filter: progid:DXImageTransform.Microsoft.AlphaImageLoader(src='wplimages/zoom.png', sizingMethod='scale');
    -ms-filter:"progid:DXImageTransform.Microsoft.AlphaImageLoader(
src='wplimages/zoom.png', sizingMethod='scale')";
    -moz-transition: opacity .3s .2s, margin-top .3s .2s;
    -ms-transition: opacity .3s .2s, margin-top .3s .2s;
    -o-transition: opacity .3s .2s, margin-top .3s .2s;
    transition: opacity .3s .2s, margin-top .3s .2s;
}

#menu_top_inside {
    
   
}


#menu_top:hover #menu_top_inside {
   
    

}