The CSS change in 39575a0 added `display: flex` to the lightbox dialog
unconditionally, which overrode the browser's default `display: none`
for closed dialogs. This made the invisible lightbox overlay intercept
all clicks on the page.
Move flexbox properties to the `&[open]` selector so they only apply
when the dialog is actually open.
Also fix typo: `innerHtml` → `innerHTML` (capital H).
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
Mike Dalessio
17b7af9b92