Understand the source
This focused preview contains the body region of a library page. A complete standalone page also needs its document declaration, html language, head metadata, and body wrapper. The full structure lesson provides that scaffold; this example keeps the visible content easy to identify.
<main>
<h1>Neighborhood library</h1>
<p>Open Tuesday to Saturday.</p>
</main>Expected output
The library name appears as a heading and the opening information appears below it. Metadata such as the title element is not a paragraph in that output. The playground supplies a containing document, so use Download and inspect the generated source when comparing it with a hand-authored complete file.
Make a deliberate change
Change the opening sentence to include a second day, then add an h2 named Membership. Write a short paragraph below it. In a separate local file, give the tab a title that identifies this particular library page rather than using a generic label such as Home.
Review the behavior
Check the visible heading and the tab title independently. A correct h1 does not make a missing document title acceptable. Developer tools may show elements inserted by the parser; compare that tree with the original response when you investigate unexpected structure.