antora-ui-camel/src/css/body.css

.body {
  min-height: calc(100vh - var(--navbar-height) - var(--footer-height));
  word-wrap: break-word; /* aka overflow-wrap; used when hyphens are disabled or don't do the trick */
}

@media screen and (min-width: 1024px) {
  .body {
    display: flex;
  }
}