<style type="text/css" data-author="Tony Partner">
 
  @media only screen and (min-width: 768px) {  
    #question{QID} .answer-container {
      position: relative;
      max-height: 500px;
      overflow: scroll;
    }
 
    #question{QID} table.subquestion-list {
      text-align: left;
      position: relative;
      border-collapse: collapse; 
    }
 
    #question{QID} table.subquestion-list thead th,
    #question{QID} table.subquestion-list thead td  {
      position: sticky;
      top: 1px;
      z-index: 1000;
      background: #DDDDDD;
      border: 0 none;
      box-shadow: -1px 0 #000000, 0 1px #000000, 1px 0 #000000, 0 -1px #000000;
    }
 
    #question{QID} table.subquestion-list .ls-heading-repeat {
      display: none;
    }
  }
</style>

<style type="text/css">td.inserted-header {
    font-weight: bold;
    text-align: left;
    vertical-align: middle !important;
    font-style: italic;
    color:maroon;
}
</style>

.fruity .ls-answers .ls-heading th {
    font-weight: 400;  // or whatever you like
}