Science Knowings: CSS Course For Social Media

CSS Overflow

Introduction to CSS Overflow

CSS Overflow - Master the Art of Scrolling and Containment

Understanding CSS Overflow

CSS Overflow is a property that defines how an element's content behaves when it exceeds its bounding box.

It allows you to control whether the content is hidden, clipped, or scrolled when it spills outside the element's visible area.

What is Overflow?

Overflow refers to the behavior of an element's content when it exceeds the boundaries of its container.

The overflow property determines what happens to the excess content.

Types of Overflow

- Default behavior.
- Content is not clipped and can overflow outside the element's boundaries.

- Content is clipped and hidden when it exceeds the element's boundaries.

- Adds scrollbars to the element, allowing users to scroll and view the overflown content.

- Automatically adds scrollbars if the content overflows, otherwise it behaves like visible.

- Resets the overflow property to its initial value.

- Inherits the overflow property value from the parent element.

overflow-x and overflow-y

These properties allow you to control overflow in specific directions.

overflow-x: Controls horizontal overflow (left and right).
overflow-y: Controls vertical overflow (top and bottom).

Practical Examples

Here's how to apply overflow in practice:

Tip: Using overflow:hidden with Images

This technique allows you to hide any parts of an image that fall outside the bounding box.

img {
overflow: hidden;
width: 100px;
height: 100px;

Tip: Using overflow:auto with Scrolling Elements

This technique adds scrollbars to elements that have overflowing content.

.scrollable-element {
overflow: auto;
max-height: 200px;

Browser Compatibility

All major browsers fully support the overflow property.

Check Can I Use for browser-specific details.

Next Topic: CSS Image Sprites

In our next session, we'll dive into CSS Image Sprites.

Sprites allow you to combine multiple images into a single file, optimizing page load times and reducing HTTP requests.

Follow us to master this powerful technique and enhance your website performance!