Basic css syntax and use of selectors_html/css_WEB-ITnose-HTML Tutorial-php.cn

Basic css syntax and use of selectors_html/css_WEB-ITnose

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Release： 2016-06-24 11:52:11

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css syntax

selector{

property:value

}

Example: h1{color:red; font-size: 14px}

After the attribute is greater than 1, separate the attributes with semicolons

If the value is greater than 1 word, you need to add quotation marks

p{font- family: "sans serif";}

Selector grouping:

h1,h2,h3,h4,h5,h6{color:red;}

Inherited:

body{

color:green;

}

css- Derived selectors

Defines styles by relying on the context of the element in its position

css-id selector

The id selector can be specified for HTML elements marked with an id Specific styles

id selectors are defined with "#"

id selectors are often used to create derived selectors

css-class selectors

The class selector is shown with a dot

class can also be used as a derived selector

css-attribute selector

pair Style HTML elements with specified attributes

Attribute and value selectors

body{    color:red;}h1,h2,p{    color: bisque;}/*派生选择器*/li strong{    color: black;}strong{    color: blue;}/*id选择器*/#divId{    color: brown;}/*id选择器和派生选择器一起作用*/#pid a{    color: crimson;}/*类选择器*/.pclass{    color: chartreuse;}/*类选择器派生选择器一起作用*/.divclass a{    font-size: 100px;    color: black;}/*属性选择器*/[title]{    color: chartreuse;    font-size: 50px;}/*属性和值选择器*/[title=te]{    color: chocolate;    font-size: 10px;}

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<!DOCTYPE html><html><head lang="en">    <meta charset="UTF-8">    <title></title>    <link href="myCss.css" type="text/css" rel="stylesheet"></head><body><p>aaaaa</p><h1>123</h1><a>aaaaaaa</a><!--派生选择器--><p><strong>p标签hello css</strong></p><ul>    <li><strong>li标签hello css</strong></li></ul><!--id选择器和派生选择器一起作用--><p id="pid">hello css <a href="http://www.baidu.com">baidu</a></p><!--id选择器的使用--><div id="divId">    这是一个div</div><!--类选择器的使用--><p class="pclass">这是一个class效果</p><div class="divclass">    Hello Div    <a href="http://www.baidu.com">baidu</a></div><!--属性选择器的使用--><p title="t">属性选择器的使用</p><!--属性和值选择器的使用--><p title="te">属性和值选择器的使用</p></body></html>

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