CSS Form Examples

Forms are where a page stops being a document and starts being a tool, and they are also where most people reach for JavaScript first. Much of that reaching is unnecessary. A checkbox already holds a boolean. A radio group already holds one choice out of several. The :checked pseudo-class reads that state back out, and the sibling combinators let anything else in the same container respond to it.

What follows are the controls a real form needs, each one built on that idea. Every example is a working control rather than a picture of one, so it can be reached with the keyboard and announced by a screen reader. Where a technique has an accessibility cost, the example page says so instead of hiding it. On October 13, 2026, all 13 form examples loaded at 390 pixels wide in Chromium 151, Firefox 153, and WebKit 26.5 without a console error or any sideways scroll.