One, use Css abbreviate
Use abbreviate can help the size that reduces your CSS file, read more easily. The main regulation of Css abbreviate consults please ” grammar of abbreviate of commonly used Css is summed up ” , here does not spread out a description.
2. Define an unit clearly, unless be worth for 0
Forgetting the unit that defines dimension is CSS novice’s common error. In HTML you can write Width=100 only, but in CSS, you must give an accurate unit, for instance: WIdth:100px Width:100em. Two exceptional circumstances are only OK adventitious justice unit: Lax Yao? is worth. Divide this beyond, other value must follow closely unit, attention, do not add blank space between numerical value and unit.
3. Divisional size is written
CSS should be used in XHTML, the elemental name of the definition in CSS is divisional big the ordinary form of a Chinese numeral. To avoid this kind of mistake, I suggest all definition names use small letter.
The value of Class and Id also is divisional big the ordinary form of a Chinese numeral in HTML and XHTML, if you must big the ordinary form of a Chinese numeral mixes write, affirm the label in your definition in CSS and XHTML is consistent carefully please.
4. Abolish the elemental limit before Class and Id
Write an element to define Class when you or Id, you can omit the elemental demarcate in front, because ID is exclusive in a page, 鴆 Las S can be used for many times in the page. A certain element is without your demarcate meaning. For example:
Div#content {/* Declarations */ }
Fieldset.details {/* Declarations */ }
Can write into
#content {/* Declarations */ }
.details {/* Declarations */ }
Can save a few byte so.
5. Acquiescent value
Normally the acquiescent value of Padding is 0, the acquiescent value of Background-color is Transparent. But in different browser acquiescent value may differ. If be afraid of,have conflict, the Margin that can define all elements first at the beginning in modal watch and Padding value are 0, elephant such:
* {
Margin:0;
Padding:0;
}
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