<link rel="stylesheet" type="text/css"
href="sheet1.css" title="Default" media="screen" />
<link rel="stylesheet" type="text/css"
href="print-sheet1.css" title="Default" media="print" />
<link rel="alternate stylesheet" type="text/css"
href="bigtext.css" title="Big Text" media="screen" />
<link rel="alternate stylesheet" type="text/css"
href="print-bigtext.css" title="Big Text" media="print" />
上面的表述意为:css被title分为两组,default和Big Text。又每一组又被分为print和screen。
<style type="text/css">
Pattern | Meaning | Described in section |
* | Matches any element. | Universal selector |
E | Matches any E element (i.e., an element of type E). | Type selectors |
E F | Matches any F element that is a descendant of an E element. | Descendant selectors |
E > F | Matches any F element that is a child of an element E. | Child selectors |
E:first-child | Matches element E when E is the first child of its parent. | The :first-child pseudo-class |
E:link E:visited | Matches element E if E is the source anchor of a hyperlink of which the target is not yet visited (:link) or already visited (:visited). | The link pseudo-classes |
E:active E:hover E:focus | Matches E during certain user actions. | The dynamic pseudo-classes |
E:lang(c) | Matches element of type E if it is in (human) language c (the document language specifies how language is determined). | The :lang() pseudo-class |
E + F | Matches any F element immediately preceded by an element E. | Adjacent selectors |
E[foo] | Matches any E element with the "foo" attribute set (whatever the value). | Attribute selectors |
E[foo="warning"] | Matches any E element whose "foo" attribute value is exactly equal to "warning". | Attribute selectors |
E[foo~="warning"] | Matches any E element whose "foo" attribute value is a list of space-separated values, one of which is exactly equal to "warning". | Attribute selectors |
E[lang|="en"] | Matches any E element whose "lang" attribute has a hyphen-separated list of values beginning (from the left) with "en". | Attribute selectors |
DIV.warning | HTML only. The same as DIV[class~="warning"]. | Class selectors |
E#myid | Matches any E element ID equal to "myid". | ID selectors |