.ttcl{ display:block; }
.ttcl .ttcl-content{
  overflow: hidden;
  transition: max-height .3s ease;
}
.ttcl .ttcl-toggle{
  margin-top:10px;
  padding:8px 12px;
  border-radius:6px;
  border:1px solid #ccc;
  background:#f5f5f5;
  cursor:pointer;
  font-size:14px;
  line-height:1.2;
}
.ttcl .ttcl-toggle:focus{
  outline:2px solid #2271b1;
  outline-offset:2px;
}

/* Only add fading mask when preview height > 0 */
.ttcl.ttcl-collapsed[data-preview-height]:not([data-preview-height="0"]) .ttcl-content{
  -webkit-mask-image: linear-gradient(to bottom, black 70%, transparent 100%);
          mask-image: linear-gradient(to bottom, black 70%, transparent 100%);
}