#browser-warning {
  position: fixed;
  top: 0px;
  width: 600px;
  left: 50%;
  margin-left: -300px;
  text-align: center;
  z-index: 9;
  height: 70px;
}

#width-warning {
  position: fixed;
  z-index: 9;
  top: 0px;
  width: 600px;
  left: 50%;
  margin-left: -300px;
  text-align: center;
}