HTML and CSS Reference
In-Depth Information
Figure 7.14
The
padding-box
value extends the background into the
padding
of
an element, but the background is contained within any
border
Figure 7.15
The
content-box
value contains the background within the
border
and
padding
of an element
The
background-clip
property value is set to
border-box
by default, allowing
a background image to extend into the same area as any border. Meanwhile, the
background-origin
property value is set to
padding-box
by default, allowing the
beginning of a background image to extend into the padding of an element.
We first discussed these keyword values when we covered the box-sizing property back in
Lesson 4
,
“
Opening the Box Model
.” The values themselves haven't changed in meaning,
but their functions do change with the use of the different background properties.
Summary
Adding backgrounds and gradients to our pages allows us to bring color to the forefront of
our designs. These features also help to define how content is grouped and to improve the
layout of our pages as a whole.
To review, this lesson covered the following:
•
How to add background colors and images to elements
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