![](https://technobabble.com.au/wp-content/uploads/2021/11/detecting-specific-text-input-with-html-and-css.jpg)
Louis Lazaris breaks down some bonafide CSS trickery from Jane. The Pen shows off interactivity where:
- You have to press a special combination of keys on a keyboard.
- Then type a secret password.
From there, a special message pops up on the screen. Easily JavaScript territory, but no, this is done here entirely in HTML and CSS, which is wild.
A lot of little known features and tricks is combined here to pull this off, like HTML’s accesskey
and pattern
attributes, as well as :not()
, :placeholder-shown
, and :valid
in CSS—not to mention the custom property toggle trick.
That’s… wow. And yet, look how very little code it is.
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