How to Create a Basic HTML5 Page Structure? (Beginner's Guide)
HTML5文档必须以开头,包含lang属性的根元素,以及含
、UTF-8编码和viewport元标签的;主体用 、

Start with the declaration—it tells the browser you’re using HTML5. Then wrap everything in an element with a lang attribute (e.g., lang="en") for accessibility and SEO.
Core Document Structure
Your page needs a and a . The holds metadata—not visible on the page—but essential for titles, character encoding, and viewport settings. Always include:
-
: sets the tab title (required) - : ensures proper text rendering
- : enables responsive behavior on mobile
Semantic Layout with HTML5 Elements
Replace generic Here’s a complete, valid HTML5 skeleton you can copy and build on: This is the main content.
Minimal Working Example
Welcome
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