/* drawer */

  ul.vertical.drawer {
    position: relative;
  }

  ul.vertical.drawer > li {
    min-height: 2.1rem;
  }

  ul.vertical.drawer ul.panel {
    position: absolute;
    top: 2rem;
    top: calc( 2rem + 1px );
    z-index: 3;
  }

  ul.vertical.drawer input:not([id$="_close"]):not(:checked) ~ label {
    position: initial;
    top: initial;
  }

  ul.vertical.drawer input:checked ~ label {
    position: absolute;
    top: 0;
    z-index: 4;
  }