HTML/CSS/Layout/Position Selector — различия между версиями

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м (1 версия)
 
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Версия 09:20, 26 мая 2010

Descendant Selector

 
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
  "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title></title>
<style type="text/css">
div *.my-class { 
    font-size:1.2em; 
    font-weight:bold; 
}  
</style>
</head>
<body> 
<p class="my-class">p.my-class</p> 
<div id="my-id"> 
<ol> 
<li>div ol li</li> 
<li>div ol li</li> 
<li> 
<p class="my-class">div ol li p.my-class </p> 
</li> 
</ol> 
</div> 
</body> 
</html>



Descendant Selector: id element

 
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
  "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title></title>
<style type="text/css">
#my-id p { 
    background-color:gold; 
}  

</style>
</head>
<body> 
<p class="my-class">p.my-class</p> 
<div id="my-id"> 
<ol> 
<li>div ol li</li> 
<li>div ol li</li> 
<li> 
<p class="my-class">div ol li p.my-class </p> 
</li> 
</ol> 
</div> 
</body> 
</html>



Position Selectors Demo

 
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title></title>
<style type="text/css">
div * .my-class {
  font-size: 1.2em;
  font-weight: bold;
}  
</style>
</head>
<body> 
<p class="my-class">p.my-class</p> 
<div id="my-id"> 
<ol> 
<li>div ol li</li> 
<li>div ol li</li> 
<li> 
<p class="my-class">div ol li p.my-class </p> 
</li> 
</ol> 
</div> 
</body> 
</html>



To select descendant elements

 

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
  "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title></title>
<style type="text/css">
#my-id p { background-color:gold; }  

</style>
</head>
<body> 
<p class="my-class">p.my-class</p> 
<div id="my-id"> 
<ol> 
<li>div ol li</li> 
<li>div ol li</li> 
<li> 
<p class="my-class">div ol li p.my-class </p> 
</li> 
</ol> 
</div> 
</body> 
</html>