.ol-notification {
  width: 150%;
  bottom: 0;
  border: 0;
  background: none;
  margin: 0;
  padding: 0;
}
.ol-notification > div,
.ol-notification > div:hover {
  position: absolute;
  background-color: rgba(0,0,0,.8);
  color: #fff;
  bottom: 0;
  right: 33.33%;
  max-width: calc(66% - 4em);
  min-width: 5em;
  max-height: 5em;
  min-height: 1em;
  border-radius: 4px 4px 0 0;
  padding: .2em .5em;
  text-align: center;
  box-sizing: border-box;
  transform: translateX(-50%);
  transition: .3s;
  opacity: 1;
}
.ol-notification.ol-collapsed > div {
  bottom: -5em;
  opacity: 0;
}

.ol-notification a {
  color: #9cf;
  cursor: pointer;
}