Keep type and images readable while assets load. Each lesson makes one concrete CSS decision and names its verification cost.
Lessons
- CSS font loading: keep content readable while a font arrives
- CSS readable type: set measure and rhythm before decorative details
- CSS object-fit and aspect ratio: crop a preview without distorting it
- CSS backgrounds: reserve background images for decoration
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Common Mistakes
- Do not carry a sample rule into production without checking its containing markup.
- Do not skip keyboard, zoom, or long-content checks when a visual result looks correct.
