OH MY GOD - i just found out that the scratch devs use stackoverflow!

inspect element the css of the maintenance page, scroll to line 40 of the CSS

      .content {
        width: 90vw;
        max-width: 45rem;
        margin: 0 auto;
        text-align: center;
        font-family: "Helvetica Neue", "Helvetica", Arial, sans-serif;
        color: white;
        /* hack to prevent content from shifting when scrollbar appears; see
        https://stackoverflow.com/a/30293718/2308190 */
        padding-left: calc(100vw - 100%);
      }