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HTML and CSS Advanced: Styles That Hold Up in Production
Check Yourself: Motion and Interaction
Five scenario questions on animation choices, reduced motion and modals. If you miss more than one, reread the lesson that covers it.
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Architecture That Scales
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Modern CSS Without a Framework Crutch
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Cascade Layers and Specificity You Control
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Layout Systems for Real Sites
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Complex Grids and Nested Layout Patterns
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Container Queries When the Component Is the Breakpoint
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Motion and Interaction Done Right
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Transitions and Animations That Don't Annoy People
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prefers-reduced-motion and Respecting the User
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Performance and Delivery
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Critical CSS and What Blocks First Paint
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Font Loading Without Layout Jump
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Responsive Images: srcset, sizes and Lazy Load
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Ship and Maintain
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Design Tokens and Theming Without Duplicating Everything
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CSS That Survives a Redesign
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Audit Accessibility and Visual Regressions Before Launch
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- Final Check: HTML and CSS Advanced
1.
A card has transition: all 300ms. Months later someone adds a border-width change on hover and the card looks jumpy. What is the cleanest fix?
2.
You need to animate a panel opening. Which properties are the better choice for smooth performance?
3.
A visitor has turned on "Reduce motion" in their operating system. Your hero slides in from the left. What should the CSS do?
4.
A carousel auto-advances, runs for more than five seconds and sits next to other content. Which WCAG rule applies?
5.
You open a modal with dialog.showModal() and animate it with CSS. What does the browser handle for you?
About
Five scenario questions on animation choices, reduced motion and modals. If you miss more than one, reread the lesson that covers it.
- Duration
- 5 min
- Last update
- 08/13/2026
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