This commit syncs changes for the default theme from its active development repository to core.
This is a follow up to [52081], [52107], [52164], [52222], [52283], [52335], and [52375]. It updates the theme's font size presets and fixes an issue with query padding.
To view the full set of changes, visit 623a4d7982...d6cb56cce4.
Props schlessera, williampatton, hellofromtonya, kjellr.
See #54318.
Built from https://develop.svn.wordpress.org/trunk@52392
git-svn-id: http://core.svn.wordpress.org/trunk@51984 1a063a9b-81f0-0310-95a4-ce76da25c4cd
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