.code-tabs {
  padding-top: 20px;
}
.code-tab {
  display: inline-block;
  background-color: #efefef;
  padding: 10px;
  border-top-left-radius: 10px;
  border-top-right-radius: 10px;
  cursor: pointer;
  transition: background-color 0.5s, color 0.5s;
}
.code-tab:hover {
  background-color: #000;
  color: #fff;
}
.code-content {
  padding-top: 10px;
  background-color: #000;
  color: #fff;
  padding: 20px;
  border-bottom-left-radius: 10px;
  border-bottom-right-radius: 10px;
  display: none;
}
.code-content.show {
  display: block;
}
.code-tab.selected {
  background-color: black;
  color: #fff;
}