How to use a tag style and a tag attribute writing
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A label Styl
A set of specialized predefined classes, called pseudo classes, are mainly used to deal with the state of hyperlinks. The status of hyperlink text can be controlled by pseudo-class selector + style rules. Pseudo-class selectors include:
Total: a represents connections in all states such as .mycls a {color:red}
① a:link: links are not accessed, such as .mycls a:link {color:blue}
② a:visited: visited links, such as .mycls a:visited {color:blue}
③ a:active: the color of the link when activated (when the link is in focus), such as .mycls a:active {color:blue}
④ a:hover: when you mouse over a link, such as .mycls a:hover {color:blue}
In general, the state (color, underscore, etc.) of a:hover and a:visited links should be the same.
The first three correspond to the link, vlink and alink attributes of the body element, respectively.
The sequence of the four "states" is a:link-> a:hover-> a:active-> a:visited. In addition, a:active cannot set whether there is an underscore (there is always one).
For example: common status values of pseudo-classes
The code is as follows:
A tag attribute
A tags appear in pairs, beginning and ending
Attribute.
Common-General attribute
Accesskey-Shortcut key access that represents a link
Charset-specifies the encoding used to link to the page, such as UTF-8
Coords-you can use this property to define the linked area when using an image map, usually using the XMagne y coordinates
Href-represents a link source (that is, where to link to)
Hreflang-indicates the language encoding used to link to the page
Rel-represents the relationship between the document and the content to which it is linked (what href refers to)
Rev-represents the relationship between the document and the content to which it is linked (what href refers to)
Shape-you can use shape to specify the link area when using image maps
Tabindex-represents the order in which links are traversed using the "tab" key
Target-used to indicate which window or frame should be opened by this link
Title-additional prompts that represent links
Type-represents the MIME type of the link
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