Don't use viewport dimensions for spacing

I have learned this is bad practice! We should use em/rem instead :smile:

No files or tests are named. Start by locating the site’s CSS/style sources and search for spacing rules using viewport-based units (vw/vh), then identify the affected layout declarations. Replace those spacing values with em/rem where appropriate and check nearby markup for consistency. The issue is done when spacing is expressed with em/rem and no viewport dimension units are used for spacing in the relevant styling.

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