.theme-default #slider {
   margin:20px auto 50px auto;
    width:500px; /* Make sure your images are the same size */
    height:375px; /* Make sure your images are the same size */
}

#slider {
    position:relative;
    width:500px; 
    height:375px;
    background:url(default/loading.gif) no-repeat 50% 50%;
}
#slider img {
    position:absolute;
    top:0px;
    left:0px;
    display:none;
}
#slider a {
    border:0;
    display:block;
}
.clear {
	clear:both;
}