- 01Setting Up (What You'll Need)
- 02Your First HTML
- 03Lists and Links
- 04Adding Color with CSS
- 05CSS Selectors and Classes
- 06Layout with Flexbox
- 07Trying Out Images and Tables
- 08Trying Out Form Controls
- 09Understanding the Box Model
- 10Intro to Responsive Design (Media Queries)
- 11CSS Variables (Custom Properties)
- 12Layout with CSS Grid
- 13Adding an Animation
- 14How to Write Comments
- 15Adding Interaction with Pseudo-Classes (:hover)
- 16CSS's :not() and Multi-Condition Selectors
- 17The Basics of Meta Tags and SEO
- 18The Basics of Accessibility (alt and aria-label)
- 19Trying Out data Attributes (data-*)
- 20CSS Transitions (Smooth Hover Changes)
- 21iframe (Embedding Another Page)
- 22position (Precisely Positioning an Element)
- 23z-index (Specifying Stacking Order)
- 24The Basics of localStorage (Saving Data in the Browser)
- 25The video and audio Tags (Embedding Media)
- 26Advanced Tables (colspan and rowspan)
- 27The Basics of CSS Specificity
- 28The Basics of SVG (Drawing Vector Images)
- 29Advanced Flexbox (Wrapping and Growing)
- 30Form Validation (required and pattern)
- 31Advanced CSS Grid (grid-template-areas)
- 32The details and summary Tags (Building a Collapsible Panel)
- 33CSS Counters (Automatic Numbering)
- 34Fluid Font Sizes with clamp()
- 35prefers-color-scheme (Dark Mode Support)
- 36Building a Slider with input type=range
- 37Fixing an Aspect Ratio with aspect-ratio
- 38Adjusting How an Image Displays with object-fit
- 39Rotating and Scaling with transform
- 40Serving Responsive Images with the picture Tag
- 41Showing Keyboard Focus with :focus-visible
- 42Scrolling Smoothly with scroll-behavior
- 43Switching Layouts Per-Component with Container Queries
- 44Creating a Frosted-Glass Effect with backdrop-filter
- 45Building a Flexible Grid with repeat() and minmax()
- 46Fixing a Header in Place with position: sticky
- 47Adding Pseudo-Elements with ::before and ::after
- 48Truncating Long Text with an Ellipsis Using text-overflow
- 49Using a Calculated Value in CSS with calc()
- 50[Applied] Build a Simple Website
iframe (Embedding Another Page)
In this lesson you'll learn how to embed another page with the iframe tag, so you can understand how embedding maps or video works. This is for people searching "HTML iframe usage."
Using an <iframe> tag lets you embed a separate web page inside your own page, like a "window." This is commonly used on real websites for things like embedding a map or a video. width and height specify the display size, and title specifies a description of the content.
The sample code embeds a separate page into a frame with a width of 100% and a height of 150px, in the form <iframe src="URL" width="100%" height="150">. The title attribute isn't shown on screen, but it plays the role of telling people using screen-reader software "what's embedded here."
A common beginner stumbling block is that, depending on the settings of the site you're embedding, being shown in an iframe at all can be refused. For security reasons, many sites block being embedded in an iframe, so not every page can be freely embedded.
If you've ever used a YouTube embed code or Google Maps's share feature, this iframe tag is actually what's working behind the scenes. It's a standard, widely used method whenever you want to pull an external service's content into your own site.
💡 The preview runs entirely on this page — nothing is sent externally.