various css fixes, fix new image loading bug when previewing, path docs

Jacky Zhao

2023-08-08 527ce6546e7ec50e7720ff7b9b6ff79a89c3b7fc

 quartz/styles/variables.scss

@@ -1,5 +1,6 @@
$pageWidth: 800px;
$pageWidth: 750px;
$mobileBreakpoint: 600px;
$tabletBreakpoint: 1200px;
$sidePanelWidth: 400px;
$topSpacing: 6rem;
$fullPageWidth: $pageWidth + 2 * $sidePanelWidth;