#clade, #clade ul{
  text-align:left;
  margin:0;				/* Removes browser default margins applied to the lists. */
  padding:0;
}
#clade li{
  margin:0 0 0 2px;		/* A left margin to indent the list items and give the menu a sense of structure. */
  padding:0;			/* Removes browser default padding applied to the list items. */
  list-style-type:none;		/* Removes the bullet point that usually goes next to each item in a list. */
}
#clade .symbols{			/* Various styles to position the symbols next to the items in the menu. */
  float:left;
  width:10px;
  height:1em;
  background-position:0 50%;
  background-repeat:no-repeat;
}