Web Build 018

Semantic structure: Supporting asides

Build supporting asides inside the persistent Product changelog: Supporting asides starter project.

Semantic structure

7 minutes Beginner Lesson 18 of 120

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Lesson 18 of 120 0/120 lessons 0/18 missions Semantic structure · 7 minutes

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Current edit

Create the page header

Replace the top div with the exact header and h1 for Product changelog: Supporting asides.

Target: index.html · Replace the first generic div.
Evidence: A header landmark contains the page h1.

index.html html

Preview allowlisted render

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Instructions 7 minutes

Load exact snippets or type matching Web code. Run each task, compare the preview, then press Check to save the lesson.

Start with the Current task. Edit its named project file, press Run, compare the reviewed preview, then continue. Press Check only after every task is complete.

Create the page header

Replace the top div with the exact header and h1 for Product changelog: Supporting asides.

Target index.html · Replace the first generic div. Evidence A header landmark contains the page h1. Snippet

<header>
  <h1>Product changelog: Supporting asides</h1>
</header>

Next up

Build the supporting asides flow

Add the exact labeled navigation, main landmark, and named section shown below.

Target index.html · Between header and the final generic div. Evidence Navigation has a name and main contains a section tied to its h2. Snippet

<nav aria-label="Primary">...</nav>
<main>
  <section aria-labelledby="lesson-title">...</section>
</main>

Next up

Finish with a footer

Replace the bottom div with the exact footer and course-note paragraph.

Target index.html · Replace the final generic div. Evidence The document ends with a footer after main. Snippet

<footer>
  <p>Course notes for supporting asides.</p>
</footer>

Next up

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Lesson support

What to notice while you play.

Objective

Complete a project-shaped supporting asides build while preserving each passing edit.

Hint

Start with the Current task. Open index.html, use Show exact edit when needed, Run, then follow the highlighted next task.

Why it matters

Semantic structure becomes durable when every syntax choice is tied to a visible project outcome and a specific piece of evidence.

Common mistakes

Editing the wrong file instead of index.html.
Replacing earlier passing work instead of preserving it for the next step.
Pressing Check before every task has passed Run.
Expecting learner HTML, CSS, or JavaScript to execute; the preview uses reviewed scene states only.

Reference

Snippets in this lesson.

Run

Render a simulated preview from the current lesson snippet.

Check

Save the lesson after the required task snippets are complete.

Hint

Show the lesson hint without changing progress.

Reset

Clear local Web lab scratch state for this browser.