A rather geeky/technical weblog, est. 2001, by Bramus
To target multiple classes that share the same prefix, you’d typically have to resort to adding an extra base classes to your markup or to using badly performing attribute selectors. To make things easier, CSS is getting a new selector: The Class Prefix Selector (.prefix-*).
This talk by Patrick Brosset is one of my favorite talks from this year’s CSS Day Conference. How do browsers actually recalculate styles when webpages change? Can the way you write CSS impact the speed of the recalculation process? In this talk, we’ll go through the details of how browser engines react to DOM changes …
:is() in complex selectors selects more than you might initially think
Because selector matching in browsers happens from right to left, you might end up with more matches than you expected when using .a :is(.b .c).
:has() and ~
:has() feature detection with @supports(selector(…)): You want :has(+ *), not :has(*)
:nth-child(An+B [of S]?) polyfill thanks to CSS :has() and :not()
:nth-child(An+B [of S]?) is not available in all browsers, but thanks to :has we can polyfill it (to a certain extent)
:has()
Leveraging :has() to detect islands of elements that have the same class, and select the first and last one from those islands.
:has()
Leverage CSS :has() and :nth-child() to style a parent based on the number of children it has.
Jim Nielsen set out to style a bunch of links that appeared before hr elements. As the element tree – generated from a Markdown file – was entirely flat, there are no enclosing section elements to hook onto in order to select those links (using something like section p:last-child a:only-child). The solution? The :has() selector: …
x items
Because I keep forgetting this, an entry on the blog so that my future self can find it back easily: CSS: Want your first 5 list items to be bold? li:nth-of-type(-n + 5) {font-weight: bold;} Start with the # of list items you want to impact, then increment backward with -n. — Estelle Weyl (@estellevw) …