ul {
    position: absolute;
    z-index: 80000;
    /*background-color: whitesmoke;*/ 
    background-color: rgba(245,245,245,0.9);
    list-style: none;
    margin: 0;
    padding-left: 5px;
    padding-right: 5px;
    border-style: solid;
    border-color: grey;
    border-width: 1px;
    border-radius: 3px;
    max-height:600px;
    width: 180px;
    overflow-y: auto;
  }
  
  details summary::marker {
    display: none;
    font-size: 0;
  }
  
  details summary::-webkit-details-marker {
    display: none;
    font-size: 0;
  }
  
  details summary::after {
    content: "\25BC";
    display: inline-block;
    font-size: small;
    margin-left: 0.5rem;
    transform: rotate(-90deg);
    transition: transform 0.25s;
    width: 0.75rem;
  }
  
  details[open] summary::after {
    transform: rotate(0);
  }
  
  fieldset {
    border: 0;
    /*padding: 1rem 0; this makes space between title and content*/
  }
  
  fieldset legend {
    position: absolute !important;
    width: 1px !important;
    height: 1px !important;
    padding: 0 !important;
    margin: -1px !important;
    /*overflow: hidden !important;*/
    clip: rect(0, 0, 0, 0) !important;
    white-space: nowrap !important;
    border: 0 !important;
  }
  
  ul li {
    margin: 0;
  }
  
  ul li label {
    display: inline-block;
    width: 8rem;
  }

  ul li input {
    display: inline-block;
  }