Day 64: the revert-layer keyword
source link: https://www.matuzo.at/blog/2022/100daysof-day64/
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Day 64: the revert-layer keyword
posted on December 22., 2022
It’s time to get me up to speed with modern CSS. There’s so much new in CSS that I know too little about. To change that I’ve started #100DaysOfMoreOrLessModernCSS. Why more or less modern CSS? Because some topics will be about cutting-edge features, while other stuff has been around for quite a while already, but I just have little to no experience with it.
With cascade layers comes a new CSS-wide property value, revert-layer
.
You can use the revert-layer
keyword to roll back the cascade to a value defined in a previous layer.
In the following example, the base
layer defines a black color for the border. The theme layer sets the border color to fuchsia
. In a print
media query within the theme
layer we revert the style back to the color in the base
layer.
@layer base {
h2 {
--border-color: #000;
border: 4px solid var(--border-color);
}
}
@layer theme {
h2 {
--border-color: fuchsia;
}
@media print {
h2 {
--border-color: revert-layer;
}
}
}
<h2>Sretan Božić!</h2>
Sretan Božić!
If you try to print this page, you will see that the border-color
of the <h2>
is #000
.
Further reading
Want more?
Overview: 100 Days Of More Or Less Modern CSS
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