<h1>Heading</h1>

h1 {
  font-family: Georgia, serif;
  text-align: center;
  font-weight: normal;
  font-variant: small-caps;
  letter-spacing: 0.1em;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 1em;
}

h1::before,
h1::after {
  content: "";
  border-top: 0.1em double black;
  align-self: center;
}