If you’ve been making websites for years, you know how frustrating it was to lay out a web page with CSS floats.

Safari 17.4 adds vertical writing mode support for form control elements across macOS, iOS, iPadOS, and visionOS.

You might have noticed that Safari Technology Preview 179 includes an update to CSS Nesting that adds support for the new “relaxed parsing behavior”.

Back in December, we wrote an article detailing three different options for CSS Nesting.

The CSS Working Group is continuing a debate over the best way to define nesting in CSS.

It’s been a long-standing dream of front-end developers to have a way to apply CSS to an element based on what’s happening inside that element.

Color fonts provide a way to add richness to your designs without sacrificing any of the many benefits of using plain text.

The “focus indicator”, as its name suggests, visually indicates (often with a kind of an outline) that an element has focus.

CSS Transforms appeared on the Web along with CSS Animations and CSS Transitions to add visual effects and motion on the Web.

With the introduction of Dark Mode in macOS Mojave last year, web developers have been asking for support in Safari to style web content that matches the system appearance.

The section below about safe area insets was updated on Oct 31, 2017 to reflect changes in the iOS 11.2 beta.