Просмотр кода страницы MediaWiki:Rrm4test.css.

.inteq_vtabs {
  display: flex;
  width: 100%;
  border: 1px solid #ccc;
  border-radius: 6px;
  overflow: hidden;
}

.inteq_vtabs-buttons {
  display: flex;
  flex-direction: column;
  width: 220px;
  background-color: #e6ebf6;
  border-right: 1px solid #ccc;
}

.inteq_vtabs-button {
  padding: 12px 16px;
  cursor: pointer;
  font-weight: bold;
  color: #333;
  border-bottom: 1px solid #ddd;
  transition: background 0.2s, color 0.2s;
}

.inteq_vtabs-button:hover {
  background-color: #d5dae6;
}

.inteq_vtabs-button.active {
  background-color: #eef2f9;
  color: #2a6ddf;
  border-left: 4px solid #2a6ddf;
}

.inteq_vtabs-content-wrapper {
  flex-grow: 1;
  padding: 20px;
  background: #eef2f9;
}

.inteq_vtabs-content {
  display: none;
}

.inteq_vtabs-content.active {
  display: block;
}