header,footer {
  background-color: green;
  text-align: center;
  padding: 1em;
  margin: 1em 0;
}
#two-col {
  column-count: 2;
  column-gap: 20px;
  column-rule: 4px dotted rgb(79, 185, 227);
}
h2 {
  margin-top: 0;
}
section,ul {
  break-inside: avoid;
  page-break-inside: avoid;
}
ul {
  list-style-type: none;
}
#suggested,#previous {
  display: none;
}
hr {
  border-top: 4px dotted rgb(79, 185, 227);
}