A review of CSS knowledge--reading "CSS Things" notes

Because prior to know the relevant knowledge of CSS, have a certain foundation, so read "CSS those things" is not very difficult, and I now read, CSS3 and HTML5 more popular, here just record some CSS knowledge record, do not do detailed roll-out, to do the record and later search for use.

Basic structure of 1.CSS

Selector {property:value;}

Consists of a selector (Selector), a declaration ({}), an attribute (property), and a property value;

Shorthand for 2.CSS

Shorthand for color:

There are several forms:

#RRGGBB (16 binary), RGB (125,0,255) RGB (25%,0%,255%) (RGB function value), Red,green (color name), windowtext user system color disk value;

the omission of the unit value:0 of the units can be written not written, generally do not write;

shorthand for internal and external patches:

Internal patches (padding), external patches (margin)

Direction from upper right down left;

A value when: All directions are this value;

Two values: Top and bottom first value, left and right second value;

Three values: The first value, left and right for the second value, and the third value;

Four values: by direction (upper right bottom left);

Shorthand for borders

div{border:1px solid #FF0000;}

div{border-width:1px; Border-style:solid dashed double;border-color: #FF0000;}

Shorthand for the background

Shorthand for fonts

Shorthand for a table

Selector for 3.CSS

Wildcard Selector

Class Selector

ID Selector

Include selectors

Sub-selectors

Adjacent selectors

Property Selector

Combination relationship of selectors

Pseudo-class and pseudo-object

Overrides for selectors, Z inheritance, weight precedence issues

4.CSS Extended Question

CSS Naming conventions

CSS Planning and Maintenance management

CSS Reset

A review of CSS knowledge--reading "CSS Things" notes