Animate HTML Details & Summary Elements Using Pure CSS
Find out how to fully animate the HTML Details/Summary disclosure widget using only CSS, including the Summary marker arrow rotate, and height transition to open/close the element content.
You’ll learn how to inspect the Shadow DOM of native HTML elements, how the calc-size() function works, why you need transition-behavior property to animate content-visibility, how to connect multiple HTML Details elements, and more.
🔗 Links
Demo: https://codepen.io/ZoranJambor/pen/jO...
Transition to "height: auto;" Using Pure CSS: • Animate to "height: auto;" & "display...
DevTools Tips: • Chrome DevTools Tips – Styles Pane & ...
Logical CSS Properties: • In-Depth Guide to CSS Logical Properties
Individual CSS Transform Properties: • Create Complex Transitions With Indiv...
Experimental Web Platform Features: • How to enable experimental CSS & JS f...
marker on MDN https://developer.mozilla.org/en-US/d...
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📖 Chapters
00:00 About HTML Details & Summary element
01:26 Style HTML Details disclosure element using CSS
02:40 Inspect HTML Details Shadow DOM in DevTools
03:55 Utilize HTML Details pseudo-elements
05:10 Animate HTML Details open/close using calc-size()
07:00 Use transition-behavior: allow-discrete; to animate content-visibility
08:58 Browser support for calc-size() & transition-behavior: allow-discrete;
10:04 Animate HTML Summary Arrow marker
15:01 Connect multiple Details elements
15:59 Open Details disclosure widget by default
16:25 Browser support for HTML Details “name” attribute
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Zoran Jambor
#css #htmldetails