fix(docs-infra): reserve scrollbar gutter for mobile nav#69154
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JeanMeche
approved these changes
Jun 4, 2026
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Problem
Opening the mobile navigation hides vertical scrolling on
body, which can remove the classic scrollbar gutter on Safari/desktop setups and change the viewport width mid-animation.Root cause
The docs shell already uses
bodyas the scroll container. When the nav opens,document.body.style.overflowY = 'hidden'removes the scrollbar, so media queries around the breakpoint can see a different width.Solution
Reserve the scrollbar gutter on the existing body scroll container with
scrollbar-gutter: stable, avoiding a larger scroll-root change while keeping the current scroll-lock behavior.Fixes #69036.
Tests
corepack pnpm exec prettier --check adev/shared-docs/styles/_resets.scssnpx --yes sass@1.94.2 --no-source-map --load-path node_modules adev/shared-docs/styles/_resets.scss $env:TEMP\angular-resets.cssgit diff --check