Switch to using tables for properties.

src/OrgAst.tsx

@@ -137,15 +137,19 @@ const OrgPropertiesList = (props: {
   const entries = Object.entries(props.properties).map(([key, value]) => {
     return (
       <Fragment key={key}>
-        <dt>{key}</dt>
-        <dd>{JSON.stringify(value)}</dd>
+        <tr>
+          <th scope="row">{key}:</th>
+          <td>{JSON.stringify(value)}</td>
+        </tr>
       </Fragment>
     );
   });
   return (
-    <dl>
-      {entries}
-    </dl>
+    <table className={styles.OrgAstProperties}>
+      <tbody>
+        {entries}
+      </tbody>
+    </table>
   );
 };