#demoapllic a {
position: absolute;
top: 0px;
left: 0px;
position: fixed;
text-indent: -1000px;
width: 100px;
height: 100px;
overflow: hidden;
background: url(http://localhost:85/smfpt/Themes/smfpt/images/demoapllic.gif) 0 0 no-repeat;
}
<head>
<div id="demoapllic"><a href="http://localhost:85/smfpt/index.php" target="_self"></a></div>