<!DOCTYPE html> | |
<meta charset="UTF-8"> | |
<title>CSS Containment Test: 'contain: style' and counter</title> | |
<link rel="help" href="https://www.w3.org/TR/css-contain-1/#containment-style"> | |
<link rel="match" href="reference/contain-style-counters-001-ref.html"> | |
<meta content="This test checks that when an element has 'contain: style', then counters which may be affecting its subtree are reset to 0 for such scope." name="assert"> | |
<style> | |
div#create-counter | |
{ | |
counter-reset: counter-of-span 9; | |
} | |
/* | |
This creates a new counter identified as "counter-of-span" | |
and initially sets such counter to 9 (an entirely | |
arbitrary number). | |
*/ | |
div#test | |
{ | |
contain: style; | |
font-size: 3em; | |
} | |
div#test span | |
{ | |
counter-increment: counter-of-span 5; | |
} | |
/* | |
This increments the counter identified as "counter-of-span" | |
of the step value of 5 (an entirely arbitrary number) each | |
and every time there is a <span> descendant within the subtree | |
of div#test | |
*/ | |
div#test span::after | |
{ | |
content: counter(counter-of-span); | |
} | |
/* | |
Now, the generated content after the span is set to the | |
current value of the counter identified as "counter-of-span" | |
*/ | |
</style> | |
<p>Test passes if there is the digit 5. | |
<div id="create-counter"></div> | |
<div id="test"><span></span></div> |