.highlight {
  position: relative;
}

.copy-button {
  position: absolute;
  bottom: 7px;
  right: 7px;
  border: 0;
  border-radius: 4px;
  padding: 1px;
  font-size: 0.7em;
  line-height: 1.8;
  color: #fff;
  background-color: #666;
  min-width: 55px;
  text-align: center;
}

.copy-button:hover {
  background-color: #777;
}

.highlight .copy-button {
  display: none;
}

.highlight:hover .copy-button {
  display: inline;
}
