html, body {
  width:  100%;
  height: 100%;
  margin: 0;
  overflow: hidden;
}

#gridctr {
  width: 100%;
  height: 100%;
}

.progress {
  position: absolute;
  left: 0;
  top: 0;
  height: 5px;
  width: 0px;
  background-color: rebeccapurple;
}