.overlayHidden
{
  display: none;
}

.overlay
{
  width: 30em;
  border: 1px solid #e7c157;
  position: relative;
  margin: auto;
  margin-top:15px;
  margin-bottom:15px;
  padding: 1em;
}

.schliessen {
  position: absolute;
  margin: 0;
  right: 0;
  top: 0;
  background: #c32e04;
  color: white;
  font: bold 0/0 sans-serif;
}

.schliessen::before {
  content: "x";
  font: bold 1rem sans-serif;
}