.fadein { position:relative; width:200px; height:200px; display:block;}
.fadein img { position:absolute; width:200px; height:200px; left:0; top:0; border:1px dotted #000; }

.fadeinfast { position:absolute; left:450px; top:100px; }
.fadeinfast img { position:absolute; left:0; top:0; width:500px; height:500px; }