body {
  margin: 0;
  font-family: system-ui, sans-serif;
  background: #fafafa;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.site-header {
  padding: 0.5rem 1rem;
  background: #fff;
  position: sticky;
  top: 0;
}

.site-title {
  margin: 0;
  font-size: 1.5rem;
  font-weight: bold;
  text-align: center;
}

main {
  flex: 1;
  padding: 1rem;
  height: calc(100vh - 3.5rem);
  text-align: center;
}

.site-footer {
  width: 100%;
  margin-top: auto;
  background: #fff;
  padding: 0;
}

.footer-img {
  display: block;
  width: 50vw;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  margin-left: auto;
  margin-right: auto;
  border-radius: 0.75em;
  box-shadow: inset 0 0 0 1em #fff, 0 0 0 20px #ccc;
}