#main {
  max-width: 800px;
  margin: 0 auto;
}

H1 {
  font-family: sans-serif;
  font-size: 18pt;
  border-bottom: 1px solid #AAA;
  margin-bottom: 1em;
}

UL {
  list-style-type: none;
  margin: 0;
  padding: 0;
}

LI {
  padding: 1ex;
  margin: 2ex 0.5ex;
  background-color: #ECF8FF;
  border: 1px dotted black;
  text-align: left;
}