<pre>
Preformatted text where whitespace and line breaks are content.
Baseline: Widely available · Grouping content
When to use it
For code blocks (wrap the code in a code element), terminal transcripts, ASCII diagrams.
When not to
Give wide pre blocks their own horizontal scroll (overflow-x) rather than letting the page scroll sideways.
Example
sx --format html --out guide.html chapter-*.md<pre><code>sx --format html --out guide.html chapter-*.md</code></pre>