docs: note embeds and update git hint

Jacky Zhao

2023-12-16 3c01b92cc46589ac4607d994b49f1327dba3f38e

 quartz/styles/variables.scss

@@ -1,6 +1,6 @@
$pageWidth: 750px;
$mobileBreakpoint: 600px;
$tabletBreakpoint: 1200px;
$sidePanelWidth: 400px;
$sidePanelWidth: 380px;
$topSpacing: 6rem;
$fullPageWidth: $pageWidth + 2 * $sidePanelWidth
$fullPageWidth: $pageWidth + 2 * $sidePanelWidth;