article ul {
  list-style: none;
}

article ul li:before {
  display: inline-block;
  min-width: 1.5em;
  font-weight: bold;
}

article ul li.done:before {
  content: '\2713';
  color: green;
}

article ul li.inprogress:before {
  content: '\21BB';
  color: orange;
}

article ul li.notstarted:before {
  content: '\25AA';
  color: gray;
}

span.timeframe {
  font-style: italic;
  color: gray;
  margin-left: 1em;
}

#start div {
  text-align: center;
  margin: 3em auto 6em;
}

.a-button {
  display: inline-block;
  border: 1px solid black;
  text-decoration: none;
  padding: 0.4em 1.7em;
  background-color: #f8f8f8;
}

.a-button:hover {
  background-color: lightgrey;
  cursor: pointer;
}