<!DOCTYPE html>
<html lang="ja">
<head>
<meta charset="UTF-8" />
<title>CSSセレクター</title>
<style>
div{
background:#e6e6fa;
}
div{
border:5px blue double;
}
*{
border:5px black solid;
}
{
border:5px red dotted;
}
div{
border:5px orange groove;
}
div{
border:5px green ridge;
}
</style>
</head>
<body>
<h1>CSSセレクター</h1>
<article>
<h2>基本問題</h2>
<figure>
<div>div</div>
<div>div</div>
<div class="z">div classZ</div>
<div>div</div>
<div class="a">div classA<div>div</div><div style="background:#FFF">div</div><div>div</div><span>span</span></div>
<div>div</div>
<div class="b">div classB<div>div</div><div>div</div><span>span</span></div>
<div>div</div>
<div class="b" id="x">div classB idX</div>
<div>div</div>
<span class="b">span classB</span><span class="z">span classZ</span>
</figure>
</article>
</body>
</html>