CSS Performance Optimization: How to Achieve 100 Points in Google PageSpeed
The article discusses advanced CSS performance optimization techniques to achieve a perfect 100 score on Google PageSpeed in 2026, moving beyond basic minification. It highlights modern CSS features like @layer for managing cascade priority, content-visibility for lazy rendering, and aspect-ratio to prevent layout shifts. The author emphasizes using native CSS solutions over JavaScript to improve rendering performance and avoid common pitfalls like layout instability and render-blocking resources.
- ▪Use @layer to manage CSS cascade and avoid specificity conflicts.
- ▪Apply content-visibility: auto to defer rendering of offscreen content.
- ▪Leverage aspect-ratio and contain-intrinsic-size to prevent layout shifts (CLS).
- ▪Avoid scroll event listeners in JavaScript; use Scroll-driven Animations instead.
- ▪Always use font-display: swap and preload critical fonts to avoid FOIT/FOUT.
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try { if(localStorage) { let currentUser = localStorage.getItem('current_user'); if (currentUser) { currentUser = JSON.parse(currentUser); if (currentUser.id === 3907391) { document.getElementById('article-show-container').classList.add('current-user-is-article-author'); } } } } catch (e) { console.error(e); } Nick Benksim Posted on May 1 • Originally published at csscodelab.com CSS Performance Optimization: How to Achieve 100 Points in Google PageSpeed #webdev #frontend #css #programming Оптимизация производительности CSS: как выжать 100 из PageSpeed и не сойти с ума Представь: ты закончил проект, всё летает на твоём мощном MacBook Pro, анимации плавные, как масло, и ты с гордостью открываешь Google PageSpeed Insights. Бац! Красная зона.
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