* {
  -webkit-touch-callout: none;
  -webkit-user-select: none;
  user-select: none;
}
#container {
  position: absolute;
  width: 480px;
  height: 480px;
  top: 50%;
  left: 50%;
  margin: -240px 0 0 -240px;
}
#container div {
  position: absolute;
  top: 0;
  left: 0;
  width: 160px;
  height: 3px;
  margin-left: -80px;
  overflow: hidden;
}
.moz #container div {
  margin-left: -81px;
}
table {
  font-size: 1px;
}