.ico-small{
  
}

.ico-window{
 width: 16px; 
 height: 16px;
 display: block;
 float: left;
 background-image: url(images/demo-sprite.png);
}

.ico-cornerResize{
 width: 16px; 
 height: 16px;
 display: block;
 float: left;
 background-image: url(images/demo-sprite.png);
 background-position: -32px 0;
}