.table-of-contents {
  margin-top: calc(4rem + 2vw);
}
.table-of-contents a {
  display: block;
  text-decoration: underline;
}
@media (max-width: 45em) {
  .table-of-contents a:not(:first-of-type) {
    margin-top: 1em;
  }
}

article {
  margin-top: calc(4rem + 2vw);
}
article p:not(:first-child) {
  margin-top: 1em;
}