Category: HTML Reference
HTML Radio Buttons: name Groups, checked Defaults, and required Validation
Build two independent radio groups and inspect their submitted values in a complete example. Learn how name, id, value, checked, required, reset, labels, and keyboard selection work together.
HTML em and strong: Emphasis, Importance, and the Difference from b and CSS
Compare stress emphasis with importance in a complete HTML example. Learn when to use em, strong, b, or CSS font-weight and why visual styling does not replace semantic meaning.
HTML progress: Set Completion Values and Switch to Indeterminate
Calculate task completion with value and max, and switch to indeterminate progress in a complete interactive example. Learn how to name the task, announce its state, and distinguish progress from meter.
HTML label: Connect for and id and Enlarge the Click Target
Compare explicit for/id associations with wrapping labels in a complete example. Check clicking and keyboard behavior, distinguish labels from placeholders, and diagnose duplicate IDs or broken associations.
HTML caption: Table Titles and Top or Bottom Positioning
Give an entire table a title with caption and distinguish it from th headers. A complete example shows how caption-side moves the title above or below the table and explains accessibility considerations.
HTML br: Line Breaks and the Differences from p, wbr, and pre
Compare br line breaks with source-code formatting and separate paragraphs in a complete example. A comparison table explains when to choose p, wbr, or pre and why CSS margin should control paragraph spacing.
HTML address: Contact Details for Article Authors and Site Operators
Use a complete HTML example to separate an article author’s contact details from the site operator’s. Learn when address applies, how mailto links behave, and which content and style changes are appropriate.
HTML select: Dropdowns, Multiple Selection, and Submitted Values
Compare select and option names and values in a working form with required and multiple selections. Check disabled-field exclusion, selected defaults, reset behavior, and how to read all selected values.
HTML noscript: Fallback Content When JavaScript Is Disabled
Compare disabled scripting with a JavaScript runtime error using a complete noscript example. Learn how to keep essential guidance available and where fallback content belongs in body and head.
HTML figure and figcaption: Group Content and Position Captions
Compare captions before and after self-contained content using a complete figure and figcaption example. Learn how captions differ from image alternative text and how the SVG example scales to a narrow screen.