3 {
        @apply(--paper-font-title);
      }

      #summary .markdown-html h4 {
        @apply(--paper-font-subhead);
      }

      /* Property Sections */

      .card {
        margin-bottom: 20px;
      }

      .card a {
        font-size: 20px;
        font-weight: 400;
        line-height: 28px;
        line-height: 48px;
      }

      .card > header {
        @apply(--iron-doc-viewer-header);
      }

      nav {
        border-bottom: 1px solid var(--paper-grey-200);
      }

      iron-doc-pr