If 3D voxel scenes (that you can style), flying focus animations, or new CSS syntaxes sound like your kinda thing, then this issue of What’s !important is definitely for you.

What’s !important #11: 3D Voxel Scenes, Flying Focus, CSS Syntaxes, and More originally handwritten and published with love on CSS-Tricks. You should really get the newsletter as well.

A clever use of CSS to calculate and display a discounted product price by providing a base price and discount amount, featuring modern CSS features like attr(), mod(), and round().

Computing and Displaying Discounted Prices in CSS originally handwritten and published with love on CSS-Tricks. You should really get the newsletter as well.

The rotateX() function rotates an element around the x-axis in a three-dimensional space

rotateX() originally handwritten and published with love on CSS-Tricks. You should really get the newsletter as well.

The rotateY() function rotates an element around its vertical y-axis.

rotateY() originally handwritten and published with love on CSS-Tricks. You should really get the newsletter as well.

The rotateZ() function rotates an element around its z-axis, so clockwise or counterclockwise.

rotateZ() originally handwritten and published with love on CSS-Tricks. You should really get the newsletter as well.

The rotate() function spins an element either clockwise or counterclockwise in a 2D plane.

rotate() originally handwritten and published with love on CSS-Tricks. You should really get the newsletter as well.

The proposed ShadowRealm API introduces a new kind of realm specifically designed for isolation, and only that.

Soon We Can Finally Banish JavaScript to the ShadowRealm originally handwritten and published with love on CSS-Tricks. You should really get the newsletter as well.

I came across Kitty Giraudel’s folded corners technique. I’ve been on a bit of a corner-shape kick lately, so I figured that corner-shape could be used to create folded corners as well.

Using CSS corner-shape For Folded Corners originally handwritten and published with love on CSS-Tricks. You should really get the newsletter as well.

I will explain how my mum inspired this 2026 Mother’s Day scrollytelling experiment — but also, how she inspired my approach to dev and life.

A Scrollytelling Gift for Mum on Mother’s Day 2026 originally handwritten and published with love on CSS-Tricks. You should really get the newsletter as well.

Mat Marquis on Google pulling the web standards equivalent of U2 album marketing:

As a Chrome user, you’ll have received Gemini Nano in the form of a 4GB transfer recently; no permission asked or required. If you remove it,

…

Google’s Prompt API originally handwritten and published with love on CSS-Tricks. You should really get the newsletter as well.

Most grid layouts sit in neat rows, perfectly aligned, like soldiers in formation. But sometimes you want something with more rhythm like, say, a zigzag pattern. Here's how to do it with CSS Grid.

Making Zigzag CSS Layouts With a Grid + Transform Trick originally handwritten and published with love on CSS-Tricks. You should really get the newsletter as well.