#InArbeit {
  background-color: #333;
  opacity: 0.8;
  position: fixed;
  left: 0px;
  top: 0px;
  z-index: 996;
  height: 100%;
  width: 100%;
  overflow: hidden;
  color: #F5060A;
  font-size: 2em;
  text-align: center;
  align-self: center;
  display: table;
}
#InArbeit #box {
  width: 100%;
  line-height: 100%;
  display: table-cell;
  vertical-align: middle;
}