Color Themes with Baseline CSS Features
So, you have a site that you want to build or redesign. Maybe you have a few core colors in mind, and you’re thinking about how to quickly implement a theme based on those colors. Baseline features can help!

a deep-dive into what’s possible
Pushing past the “variable” metaphor, CSS Custom Properties can provide new ways to balance context and isolation in our patterns and components.
A deeper dive into the [CSS Custom Properties for Cascading Variables][vars] specification. Why are they called custom properties, how do they work in the cascade, and what else can we do with them?

So, you have a site that you want to build or redesign. Maybe you have a few core colors in mind, and you’re thinking about how to quickly implement a theme based on those colors. Baseline features can help!

<dialog> and popover
Elements and windows that pop up on the screen are one of the most common patterns on the web. With use cases spanning from alerts and brief forms requesting data, to the now ubiquitous cookie settings prompt, these layered UI patterns are used frequently by developers.

From image sharing sites to online stores, image galleries are a common pattern on the web. Images can be very data heavy, and loading images can make the page take a long time to load. In addition, users have high expectations around the usability of galleries, so it’s common to…