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Custom style for first (second, third, ...) slide #477

Closed Answered by yhatt
jficz asked this question in Q&A
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By CSS spec, ID selector # cannot start with a number without escaping.
https://css-tricks.com/ids-cannot-start-with-a-number/
https://www.w3.org/TR/CSS21/syndata.html#characters:~:text=they%20cannot%20start%20with%20a%20digit

section#1 { /* Invalid */
  color: red;
}

section[id="2"] { /* Valid */
  color: red;
}

section#\33 { /* Valid */
  color: red;
}

Example: https://jsfiddle.net/unvb2rkp/

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@yhatt
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yhatt Oct 3, 2023
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Answer selected by jficz
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