.legend{
  width:100%;
}

.legend ul {
  list-style: none;
  margin:0;
  padding:0;
  text-align:center;
}
.legend li {
  display: inline-table;
  margin: 10px 4px;
}

.legend li span {
  position:relative;
  padding: 6px 20px;
  border-radius:13px;
  color:white;
  z-index:2;
}