What does 100% mean in CSS?

Amelia Wattenberger:

One of the CSS units I use most is the wonderful % — so handy for positioning elements on the page.

Unfortunately, the rules aren’t exactly straightforward. One question I’m always asking myself is: “Percent of what?”

Hopefully this guide can help clear things up.

As per usual: It Depends™

Amelia being Amelia here she sprinkled plenty over beautiful and interactive examples for you to play with across the page. Very nice!

What does 100% mean in CSS? →

💁‍♂️ The fact that percentages (sometimes) are calculated against the width of an element enabled us to create aspect-ratio boxes in CSS. That method is being supplanted nowadays, as CSS Sizing Level 4 specifies a aspect-ratio CSS property.

Published by Bramus!

Bramus is a Freelance Web Developer from Belgium. From the moment he discovered view-source at the age of 14 (way back in 1997), he fell in love with the web and has been tinkering with it ever since (more …)

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