body {
    font-family: Arial, Helvetica, sans-serif;
  }
  .switcher {
    display: flex;
    justify-content: center;
    list-style: none;
    padding: 0;
  }
  .switcher li {
    padding: 10px 15px;
    font-weight: bold;
    cursor: pointer;
    background-color: #eee;
    min-width: 105px;
    text-align: center;
    transition: 0.2s;
  }
  .switcher li.active,
  .switcher li:hover {
    background-color: red;
    color: white;
  }
  .gallery {
    display: flex;
    flex-wrap: wrap;
    width: 800px;
    margin: auto;
  }
  .gallery img {
    margin-bottom: 10px;
    transition: 0.3s;
    margin-left: 5px;
    margin-right: 5px;
  }