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CSS Counters

Create automatic numbering for headings and lists natively.

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CSS counters are variables maintained by CSS whose values can be incremented by CSS rules to track how many times they are used. Initialize with counter-reset, increment with counter-increment, and display using counter() in ::before pseudo-elements.

Key Takeaways: CSS Counters

Mastering CSS Counters helps you write clean and reliable CSS code. Follow standard conventions, test edge cases, and keep logic simple. Try running the code example below and complete the exercises to build confidence.

CSS Counters Code Example

CSS 
body {
  counter-reset: section;
}
h2::before {
  counter-increment: section;
  content: "Section " counter(section) ": ";
  color: #2563EB;
}
Output
Automatically prefixes headings with Section 1:, Section 2:
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