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CSS styles let you control many properties that
cannot be controlled using HTML alone. For example, you can assign
custom list bullets and specify different font sizes and units
(pixels, points, and so on).
By using CSS styles and setting font sizes in pixels, you can ensure
a more consistent treatment of your page layout and appearance in
multiple browsers. In addition to text formatting, you can control
the format and positioning of a block-level.
A CSS style rule consists of two parts—the selector and the
declaration. The selector is the name of the style (such as TR, or
P) and the declaration defines what the style elements are. The
declaration consists of two parts, the property (such as
font-family), and value (such as Helvetica).
The term cascading refers to your ability to apply multiple style
sheets to the same web page. For example, you can create one style
sheet to apply color and another to apply margins, and apply them
both to the same page to create the design you want.
A major advantage of CSS styles is that they provide easy update
capability; when you update a CSS style, the formatting of all the
documents that use that style are automatically updated to the new
style. |
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