.wp_block_link {
    position:absolute;
    top:0;
    left: 0;
    width:100%;
    height:100%;
    z-index: 7777777!important;
    background: #000;
    opacity: 0;
    -moz-opacity: 0; /* older Gecko-based browsers */
    filter:alpha(opacity=0); /* For IE6&7 */
}

.wp_block_html {
    position: relative;
    width:100%;
    height:100%;
}
.category-clider {
    margin-bottom: 10px;
}