delete

HTML

<div id="vk_f">
    <a href="http://www.vk.com/" target="_blank" id="vk_f_1"></a> 
</div>

CSS

#vk_f {
    position:absolute;
    left:20px;
    top:20px;
    border:none;
    }
    
#vk_f_1 {
    background: url(http://placeskull.com/100/100);
    display: block;
    width: 100px;
    height: 100px;
    }
    
#vk_f_1:hover {
    background: url(http://placeskull.com/100/100);
    }