/*! Figured out how to use Collapse from Bootstrap without importing bootstrap.css using 
https://jsfiddle.net/viper25/zzc3pafx/3/
http://www.w3schools.com/bootstrap/bootstrap_collapse.asp
http://maxcdn.bootstrapcdn.com/bootstrap/3.4.1/css/bootstrap.css
Requires 3.4.1/js/bootstrap.min.js
Upgrading to 4.3.1 version of bootstrap.min.js breaks this
*/

.collapse {
  display: none;
}
.collapse.in {
  display: block;
}
.collapsing {
  position: relative;
  height: 0;
  overflow: hidden;
  -webkit-transition-timing-function: ease;
       -o-transition-timing-function: ease;
          transition-timing-function: ease;
  -webkit-transition-duration: .35s;
       -o-transition-duration: .35s;
          transition-duration: .35s;
  -webkit-transition-property: height, visibility;
       -o-transition-property: height, visibility;
          transition-property: height, visibility;
}

a { padding: 5px; }
 
  /* unvisited link */
 a:link {
   color: DimGray;
   /*To remove the underline*/
   text-decoration: none;
   text-shadow: 0 0 1px #999;
 }
 
 /* visited link */
  a:visited {
   color: DimGray;
   text-decoration: none;
 }
 
 /* mouse over link */
  a:hover {
    background-color: LightGray;
 }
 /* selected link */
 
 a:active {
    padding-top: 2px;
 }