.switch {
      position: relative;
      display: inline-block;
      width: 50px;
      height: 19px;
    }

    .switch input {display:none;}

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

    .slider:before {
      position: absolute;
      content: "";
      height: 13px;
      width: 15px;
      left: 4px;
      bottom: 4px;
      background-color: white;
      -webkit-transition: .4s;
      transition: .4s;
    }

     input:checked + .slider {
      background-color: #4747d1;
    }

    input:focus + .slider {
      box-shadow: 0 0 1px #2196F3;
    }

    input:checked + .slider:before {
      -webkit-transform: translateX(26px);
      -ms-transform: translateX(26px);
      transform: translateX(26px);
    }

    /* Rounded sliders */
    .slider.round {
      border-radius: 34px;
    }

    .slider.round:before {
      border-radius: 50%;
    }