.overlay {
  position: absolute;
  top: 0;
  left: 50%;
  width: 500px;
  margin-left: -250px;
  background: #303030;
  color: #eee;
  padding: 10px;
  z-index: 9999;
  box-sizing: border-box;
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.5);
  border-radius: 3px;
}

.overlay .message {
  padding-top: 5px;
  font-size: 11px;
}

.overlay.mini {
  width: 200px;
  margin-left: -100px;
}

.overlay.from-top {
  border-top: none;
  border-top-left-radius: 0;
  border-top-right-radius: 0;
}