chore: add down for maintenance banner

Author: coolaj86

index.html

@@ -68,12 +68,12 @@ <h1>Bliss: Blog, Easy As Gist</h1>
         </ul>
       </nav>
       <p>
-        <sup>Maintenance: 2024-05-05</sup>
+        <mark><strong>Maintenance: 2024-05-05</strong></mark>
         <br />
-        Bliss will be <strong>down for maintenance</strong> for a few hours
-        while updating the database and moving to a new server.
+        Bliss will be <mark><strong>down for maintenance</strong></mark> for a
+        few hours while updating the database and moving to a new server.
         <br />
-        <em>Sync will not be available during this time</em>, but documents
+        <mark>Sync will not be available during this time</mark>, but documents
         <strong>will save locally</strong>, and
         <strong>sync will resume</strong> afterwards.
       </p>