CSS3 Backgrounds – CSS

title: CSS3 Backgrounds

CSS3 Backgrounds

The CSS background shorthand property is used to define multiple properties like :

background-color, background-image, background-repeat, background-attachment and background-position

Background Color

The background-color property specifies the background color of an element.

background-color : #F00;

Background Image

The background-image property specifies an image to use as background of an element.

By default, the image repeats itself to cover the entire surface of the element.

background-image: url("GitHub-Mark.png");

Background Image – Repetition

By default, the background-image property repeats on the X and Y axis, to cover the area of its container.
If you want to set an axis, like X axis, use background-repeat property type:

background-image: url("GitHub-Mark.png"); background-repeat: repeat-x;

But sometimes you don’t want to have your background image cover the whole surface, so you’ve to specify it by typing:

background-image: url("GitHub-Mark.png"); background-repeat: no-repeat;

Background Image – Position

You can specify the position of the background by typing :

background-image: url("GitHub-Mark.png"); background-repeat: no-repeat; background-position : left bottom;

It will set your background image at the bottom left of the element.

Background Image – Fixed Position

If you do not want the background image to scroll with the rest of the page, use the background-attachement property:

  background-image: url("GitHub-Mark.png"); background-repeat: no-repeat; background-position: left bottom; background-attachment: fixed;

Background Attachment

The background-attachment property sets whether a background image will scroll with the rest of the page, or would remain fixed.

background-image: url("GitHub-Mark.png"); background-repeat: no-repeat; background-attachment: fixed;

Valid Property Values: scroll, fixed, initial, local, inherit

Shorthand property

You can pass all the properties in one super-property:

background: #F00 url("GitHub-Mark.png") no-repeat fixed left bottom;

When you use this shorthand property, it must be in this order:

  1. Background color
  2. Background image
  3. Background repeat
  4. Background attachment
  5. Background position

It doesn’t matter if one property is missing, so long as the order is maintained:

 background: url("GitHub-Mark.png") no-repeat left bottom;

This will work even if the color and the attachment are missing.

Multiple Backgrounds

You can pass in multple background images and set their properties simultaneously.

  background-image: url("firstimage.jpg"), url("secondimage.jpg"); background-repeat: no-repeat, repeat; background-position: left bottom, right bottom;

You can add individual properties to individual images in their respective order.

More Information:


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