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REFERENCEhtml

html Documentation

📖 INDEX

# helloworld
# comments-html
# html-tag
# head-tag
# body-tag
# p-tag
# b-tag
# i-tag
# strong-tag
# em-tag
# s-tag
# cite-tag
# blockquote-tag
# sub-tag
# sup-tag
# u-tag
# big-tag
# tt-tag
# pre-tag
# q-tag
# code-tag
# samp-tag
# var-tag
# abbr-tag
# acronym-tag
# address-tag
# ins-tag
# strike-tag
# span-tag
# hr-tag
# title-tag
# meta-tag
# base-tag
# link-tag
# a-tag
# script-tag
# noscript-tag
# style-tag
# div-tag
# h1-tag
# h2-tag
# h3-tag
# h4-tag
# h5-tag
# h6-tag
# ul-tag
# ol-tag
# li-tag
# dl-tag
# dt-tag
# dd-tag
# menu-tag
# dir-tag
# table-tag
# tr-tag
# th-tag
# td-tag
# thead-tag
# tbody-tag
# tfoot-tag
# caption-tag
# col-tag
# colgroup-tag
# form-tag
# input-tag
# textarea-tag
# select-tag
# option-tag
# button-tag
# label-tag
# fieldset-tag
# legend-tag
# datalist-tag
# optgroup-tag
# radio-buttons
# checkboxes
# submit
# reset
# input-types
# input-attributes
# meta-tags
# open-graph
# twitter-cards
# geotagging
# img-tag
# video-tag
# audio-tag
# iframe-tag
# map-tag
# area-tag
# object-tag
# param-tag
# applet-tag
# controls
# autoplay
# loop
# muted
# poster
# src
# type
# javascript-in-html
# basefont-tag
# bdo-tag
# font-tag
# frame-tag
# frameset-tag
# noframes-tag
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<big>

AI & DATA SCIENCE // big-tag

The deprecated <big> element rendered text one font-size level larger than its surroundings; use CSS font-size instead in modern HTML.

Syntax

<!-- Deprecated: -->
<big>Bigger text</big>
<!-- Modern equivalent: -->
<span style="font-size: larger;">Bigger text</span>

Deep Dive Course

**`<big>`** was part of HTML 3.2/4 and simply increased text size by one step relative to its parent. It was removed from the HTML5 spec because it conflates presentation with markup — sizing text is purely a visual concern that belongs in CSS. Modern browsers (Chrome, Firefox, Safari) no longer render `<big>` with any special styling at all; it behaves like an unstyled `<span>`.

1Understanding <big>

`<big>` was part of HTML 3.2/4 and simply increased text size by one step relative to its parent. It was removed from the HTML5 spec because it conflates presentation with markup — sizing text is purely a visual concern that belongs in CSS. Modern browsers (Chrome, Firefox, Safari) no longer render <big> with any special styling at all; it behaves like an unstyled <span>.

💡

If you encounter <big> in old legacy code you're maintaining, replace it with a <span> and a CSS font-size rule (or a semantic heading if it's actually a title).

editor.html
<!-- Old, deprecated markup -->
<p>Regular text <big>slightly bigger text</big> regular text.</p>
localhost:3000

2Practical Example

Here is a real-world application of <big> showing how it is used in production HTML.

editor.html
<!-- Correct modern replacement -->
<p>Regular text <span style="font-size: 1.2em;">slightly bigger text</span> regular text.</p>
localhost:3000

3Best Practices

Follow these guidelines when working with <big>:

1. Don't use <big> in new code — it's obsolete and not supported by modern browsers

2. Use CSS font-size (e.g. larger, 1.25em, or a specific value) for text size changes

3. If migrating old markup, replace <big> with a styled <span> or the correct semantic element

⚠️

Tip: If you encounter <big> in old legacy code you're maintaining, replace it with a <span> and a CSS font-size rule (or a semantic heading if it's actually a title).

editor.html
<!-- Old, deprecated markup -->
<p>Regular text <big>slightly bigger text</big> regular text.</p>
localhost:3000

Examples

Example 01Basic Usage
<!-- Old, deprecated markup -->
<p>Regular text <big>slightly bigger text</big> regular text.</p>
Example 02Advanced Example
<!-- Correct modern replacement -->
<p>Regular text <span style="font-size: 1.2em;">slightly bigger text</span> regular text.</p>

Best Practices

  • Don't use in new code — it's obsolete and not supported by modern browsers
  • Use CSS font-size (e.g. larger, 1.25em, or a specific value) for text size changes
  • If migrating old markup, replace with a styled or the correct semantic element

Interview Question

Why was <big> removed from the HTML5 spec, and what's the modern replacement?▼

Hint: Think about the general principle of separating structure/semantics from presentation.

HTML5 removed <big> (along with <font>, <center>, and similar tags) as part of a broader push to separate document structure/semantics (HTML) from visual presentation (CSS). Font sizing has no semantic meaning of its own, so it belongs entirely in CSS via font-size, giving far more control (any size, unit, or responsive value) than the fixed one-step increase <big> provided.

Exercises

EasyPractice using <big> in a real scenario.
View Solution
<!-- Old, deprecated markup -->
<p>Regular text <big>slightly bigger text</big> regular text.</p>

Frequently Asked Questions

Why was <big> removed from the HTML5 spec, and what's the modern replacement?▼

HTML5 removed (along with ,

, and similar tags) as part of a broader push to separate document structure/semantics (HTML) from visual presentation (CSS). Font sizing has no semantic meaning of its own, so it belongs entirely in CSS via font-size, giving far more control (any size, unit, or responsive value) than the fixed one-step increase provided.

Related Functions

tt-tagstrike-tagfont-tag