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Case Study: How I Cut CLS from 0.35 to 0.02 — A Step-by-Step Breakdown How to Properly Reserve Space for Images and Iframes Aspect-Ratio in CSS: Setting Proportions Without Breaking Your Layout What Is Cumulative Layout Shift (CLS) and How to Measure It
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Blog

Case Study: How I Cut CLS from 0.35 to 0.02 — A Step-by-Step Breakdown

Dana Kowalski 17 July 2026

This is the post I’ve been building toward this whole series, honestly. Everything we’ve covered — images, fonts, ads, dynamic content, animations — actually showed up on one real project…

Blog

How to Properly Reserve Space for Images and Iframes

Dana Kowalski 17 July 2026

Here’s a confession: for the longest time, I thought “reserving space” was just a fancy way of saying “use aspect-ratio and call it a day.” Turns out, it’s a whole…

Blog

Aspect-Ratio in CSS: Setting Proportions Without Breaking Your Layout

Dana Kowalski 17 July 2026

Okay, real talk — for years, keeping an image or video from collapsing your layout while it loaded meant using a hack so ugly I’m almost embarrassed to type it…

Blog

What Is Cumulative Layout Shift (CLS) and How to Measure It

Dana Kowalski 17 July 2026

Let me guess — you clicked a button, and then, at the exact wrong millisecond, the whole page jumped and you ended up clicking something else. An ad. A “subscribe”…

Blog

Case Study: How I Cut CLS from 0.35 to 0.02 — A Step-by-Step Breakdown

Blog

How to Properly Reserve Space for Images and Iframes

Blog

Case Study: How I Cut CLS from 0.35 to 0.02 — A Step-by-Step Breakdown

Blog

How to Properly Reserve Space for Images and Iframes

Blog

Aspect-Ratio in CSS: Setting Proportions Without Breaking Your Layout

Blog

What Is Cumulative Layout Shift (CLS) and How to Measure It

Blog

Case Study: How I Cut CLS from 0.35 to 0.02 — A Step-by-Step Breakdown

Dana Kowalski 17 July 2026

This is the post I’ve been building toward this whole series, honestly. Everything we’ve covered — images, fonts, ads, dynamic content, animations — actually showed up on one real project…

Blog

How to Properly Reserve Space for Images and Iframes

Dana Kowalski 17 July 2026

Here’s a confession: for the longest time, I thought “reserving space” was just a fancy way of saying “use aspect-ratio and call it a day.” Turns out, it’s a whole…

Blog

Aspect-Ratio in CSS: Setting Proportions Without Breaking Your Layout

Dana Kowalski 17 July 2026

Okay, real talk — for years, keeping an image or video from collapsing your layout while it loaded meant using a hack so ugly I’m almost embarrassed to type it…

Blog

What Is Cumulative Layout Shift (CLS) and How to Measure It

Dana Kowalski 17 July 2026

Let me guess — you clicked a button, and then, at the exact wrong millisecond, the whole page jumped and you ended up clicking something else. An ad. A “subscribe”…

Recent Posts

  • Case Study: How I Cut CLS from 0.35 to 0.02 — A Step-by-Step Breakdown
  • How to Properly Reserve Space for Images and Iframes
  • Aspect-Ratio in CSS: Setting Proportions Without Breaking Your Layout
  • What Is Cumulative Layout Shift (CLS) and How to Measure It

You Missed

Blog

Case Study: How I Cut CLS from 0.35 to 0.02 — A Step-by-Step Breakdown

Blog

How to Properly Reserve Space for Images and Iframes

Blog

Aspect-Ratio in CSS: Setting Proportions Without Breaking Your Layout

Blog

What Is Cumulative Layout Shift (CLS) and How to Measure It

LayoutStability.rocks

Practical CSS techniques, calculators, and case studies for building pages that don't jump around. Written by a developer who's spent way too many hours chasing layout shifts — so you don't have to.

Find Me

  • GitHub: github.com/danakowalski
  • Twitter/X: @danabuildswebs
  • Email: [email protected]
  • Case Study: How I Cut CLS from 0.35 to 0.02 — A Step-by-Step Breakdown
  • How to Properly Reserve Space for Images and Iframes
  • Aspect-Ratio in CSS: Setting Proportions Without Breaking Your Layout

Layout Stability