<!-- BEGIN COPY / PASTE -->
    <label class="switch">
      <input type="checkbox">
      <span class="slider"></span>
    </label>

    <style>
      .switch {
        position: relative;
        display: inline-block;
        width: 60px;
        height: 34px;
      }

      .switch input {
        opacity: 0;
        width: 0;
        height: 0;
      }

      .slider {
        position: absolute;
        cursor: pointer;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background-color: #ccc;
        transition: .4s;
        border-radius: 34px;
      }

      .slider:before {
        position: absolute;
        content: "";
        height: 26px;
        width: 26px;
        left: 4px;
        bottom: 4px;
        background-color: white;
        transition: .4s;
        border-radius: 50%;
      }

      input:checked + .slider {
        background-color: #2196F3;
      }

      input:checked + .slider:before {
        transform: translateX(26px);
      }
    </style>
    <!-- END COPY / PASTE -->