body {
  margin: 0;
  padding: 24px;
  min-height: 100vh;
  box-sizing: border-box;
  display: flex;
  flex-direction: column;
  background: #fff;
  color: #000;
  font-family: "Times New Roman", Times, serif;
  line-height: 1.5;
}

main { max-width: 42em; }

footer { margin-top: auto; padding-top: 3em; }

figure { margin: 1.5em 0; }
figure img,
figure video {
  display: block;
  max-width: 100%;
  max-height: 28em;
  height: auto;
}
figcaption { margin-top: 0.5em; }