.rules {
  --background: var(--background-color);
  color: contrast-color(var(--background));
  margin-block: var(--section-margin);
}

.rules .contents {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}

.rules-list {
  margin-inline-start: 1em;
  max-width: 55ch;
  line-height: 1.65;

  ul {
    margin-inline-start: 1em;
    font-size: 0.9em;
  }

  li {
    margin-block: 0.25em;
  }
}