<div class="thumb t1">   thumb 1   </div>
<div class="thumb t2">   thumb 2   </div>
<div class="thumb t3">   thumb 3   </div>
<div class="thumb t4">   thumb 4   </div>
<div class="thumb t5">   thumb 5   </div>
<div class="thumb t6">   thumb 6   </div>
<div class="thumb t7">   thumb 7   </div>

.t5,.t6,.t6,.t7,.t8,.....,.t1000 {
position:relative;
width:100px;
height:100px;
}