div.page-header {
  margin-top: 1.75rem !important;
}

main.container {
  margin-top: .75rem !important;
}

div.separator {
  border: 1px solid black;
  height: 3px;
  width: 80%;
  margin-left: auto;
  margin-right: auto;
  background-color: black;
  margin-top: 2em;
  margin-bottom: 2em;
}

a {
  color: black;
  text-decoration: none;
}

.nav-links {
  margin-top: 2em;
  margin-bottom: 1.25em;
}

.nav-links a {
  text-decoration: underline;
  font-weight: bold;
  font-size: 1.25em;
}

.thumbnail-link {
  margin-bottom: .5em;
  width: 100%;
  height: 33%;
  object-fit: cover;
  max-height: 250px;
}

.thumbnail {
  margin-bottom: .5em;
  width: 100%;
  object-fit: cover;
  max-height: 250px;
}

.article

@media only screen and (max-width: 420px) {
  .thumbnail {
    width: 100%;
  }
}