aside#sidebar {
  padding: 1rem;

  @media (min-width: 768px) {
    width: 14rem;
    float: left;
  }

  nav {
    ul:first-of-type {
      margin-left: 0; /* Override Pico. */
    }
    li {
      padding: calc(var(--pico-nav-element-spacing-vertical) * .25) var(--pico-nav-element-spacing-horizontal);
      padding-left: calc(var(--pico-nav-element-spacing-vertical) * 1);
      border-left: 1px solid #353841;
      a {
        color: #d4d4d4;
        &:hover {
          color: var(--pico-primary);
        }
      }
    }
  }
  summary {
    list-style-type: none;
    cursor: pointer;
    font-weight: bold;
  }
}