#display {
  width: 1280px;
  height: 760px;
  padding:0;
  position:absolute;
  margin-left: Calc(50% - 640px);
  margin-top:100px;
  outline:20px solid rgba(50,50,50,1)
}
body {
  width:100%;
  height:100%;
}
html {
  height:100%;
  width:100%;
  overflow-x:hidden;
  overflow-y:hidden;
}
* {
  margin:0;
  padding:0;
}