h1 span.subtitle {
  display: block;
  border-top: 1px dashed black;
  margin-top: 1ex;
  padding-top: 0.5ex;
  font-size: 50%;
  font-weight: normal;
}

span.subtitle-separators {
  padding: 0 0.3em;
}

span.pgp-short-code {
  font-weight:bold;
  padding-left:0.2rem;
}

h2.blog-post + p {
  margin-top: 0.5ex;
}

@media (prefers-color-scheme: dark) {
  h1 span.subtitle {
    border-top: 1px dashed #ccc;
  }
}

@media only screen and (max-width: 45em) {
  span.subtitle-separators {
    padding: 0 0.15em;
  }
}