body {
  margin:0;
  padding:0;
}

img,a,iframe {
  margin:0;
  padding:0;
  border:none;
}

.dbg {
  background:#CCC;
  border:1px solid #F00;
  width:100px;
  position:absolute;
  top:2px;
  left:2px;
  paddig:2px;
  font-weight:bold;
  text-align:center;
  font-size:14px;
}