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Add CSS section numbering for draft specification #666

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Add CSS section numbering for draft specification #666

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51 changes: 51 additions & 0 deletions docs/style.css
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Original file line number Diff line number Diff line change
Expand Up @@ -6,3 +6,54 @@
#feature-support-matrix-wrapper table {
min-width: 800px;
}

/* CSS numbering for draft specification sections */
/* Uses CSS counters to automatically number headings in hierarchical format (1., 1.1, 1.1.1, etc.) */

/* Target pages under /specification/draft/ by detecting href attributes containing that path */
/* Initialize the top-level counter when on a draft specification page */
body:has([href*="/specification/draft/"]) {
counter-reset: h1-counter;
}

/* Each heading level increments its own counter and resets child counters */
body:has([href*="/specification/draft/"]) h1 {
counter-increment: h1-counter;
counter-reset: h2-counter;
}

body:has([href*="/specification/draft/"]) h2 {
counter-increment: h2-counter;
counter-reset: h3-counter;
}

body:has([href*="/specification/draft/"]) h3 {
counter-increment: h3-counter;
counter-reset: h4-counter;
}

body:has([href*="/specification/draft/"]) h4 {
counter-increment: h4-counter;
}

/* Insert the hierarchical numbering before each heading */
/* Format: "1. " for h1 */
body:has([href*="/specification/draft/"]) h1::before {
content: counter(h1-counter) ". ";
}

/* Format: "1.1 " for h2 */
body:has([href*="/specification/draft/"]) h2::before {
content: counter(h1-counter) "." counter(h2-counter) " ";
}

/* Format: "1.1.1 " for h3 */
body:has([href*="/specification/draft/"]) h3::before {
content: counter(h1-counter) "." counter(h2-counter) "." counter(h3-counter) " ";
}

/* Format: "1.1.1.1 " for h4 */
body:has([href*="/specification/draft/"]) h4::before {
content: counter(h1-counter) "." counter(h2-counter) "." counter(h3-counter) "." counter(h4-counter) " ";
}