.main-content ul {
  padding: 0.5em;
  list-style-type: none;
}
.main-content ul li.level1 {
  position: relative;
  padding: 0.5em 1em 0.5em 2.3em;
  margin-bottom:10px;
  border-bottom: 0px;
  border-right: 0px;
  width: 80%;
  border-style: dotted;
}
.main-content ul li.level1:after,
.main-content ul li.level1:before{
  position: absolute;
  content:'';
  border-radius: 50%;
  display: flex;
  justify-content: center;
  align-items: center;
}
.main-content ul li.level1:before {
  left: 0.5em;
  width: 17px;
  height: 17px;
  background: rgba(17, 15, 65, 1);
}
.main-content ul li.level1:after {
    
  top: 1em;
  left: 1em;
  width: 14px;
  height: 14px;
  background: rgba(17, 15, 65, 0.5);
}

/* Level2 */

.main-content li.level2 {
  position: relative;
  padding: 0.5em 1em 0.5em 2.3em;
  margin-bottom:5px;
  margin-left: 20px;
}
.main-content li.level2:after,
.main-content li.level2:before{
  position: absolute;
  content:'';
  border-radius: 50%;
  display: flex;
  justify-content: center;
  align-items: center;
}
.main-content li.level2:before {
  left: 0;
  width: 17px;
  height: 17px;
  background: rgba(45, 143, 221, 1);
}
.main-content li.level2:after {
  top: 1em;
  left: 0.5em;
  width: 14px;
  height: 14px;
  background: rgba(45, 143, 221, 0.5);
}

/* level3 */

.main-content li.level3 {
  position: relative;
  padding: 0.5em 1em 0.5em 2.3em;
  margin-bottom:5px;
  margin-left: 40px;
}
.main-content li.level3:after,
.main-content li.level3:before{
  position: absolute;
  content:'';
  border-radius: 50%;
  display: flex;
  justify-content: center;
  align-items: center;
}
.main-content li.level3:before {
  left: 0;
  width: 10px;
  height: 10px;
  background: rgba(145, 20, 54, 1);
}
.main-content li.level3:after {
  top: 0.8em;
  left: 0.3em;
  width: 8px;
  height: 8px;
  background: rgba(145, 20, 54, 0.5);
}

/* level4 */

.main-content li.level4 {
  position: relative;
  padding: 0em 0em 0em 1.6em;
  margin-bottom:5px;
  margin-left: 60px;
}

.main-content li.level4:after,
.main-content li.level4:before{
  position: absolute;
  content:'';
  border-radius: 50%;
  display: flex;
  justify-content: center;
  align-items: center;
}
.main-content li.level4:before {
  top: 0.3em;
  left: 0.4em;
  width: 6px;
  height: 6px;
  background: rgb(18, 114, 47, 1);
}
.main-content li.level4:after {
  top: 0.6em;
  left: 0.6em;
  width: 4px;
  height: 4px;
  background: rgba(18, 114, 47, 0.5);
}





.main-content audio.level2{
    margin-left: 20px;
}

.main-content audio.level3{
    margin-left: 40px;
}

.main-content a {
  text-decoration: none;
  color: #110f41;
}

.main-content a:hover {
  color: #911436;           /* color when hovered */
  text-decoration: underline; /* underline on hover */
}