Q23 

<!DOCTYPE html>
<html lang="ja">
<head>
<meta charset="UTF-8">
<title>Q21</title>
<link rel="stylesheet" href="css/style.css">
</head>
<body>
<div id="nav">
<ul>
<li id="news"><a href="#">新着情報</a></li>
<li id="inform"><a href="#">ニュース／お知らせ</a></li>
<li id="product"><a href="#">製品情報</a></li>
<li id="shop"><a href="#">店舗案内</a></li>
<li id="company"><a href="#">会社案内</a></li>
</ul>
</div>
</body>
</html>




@charset="UTF-8";

/*reset*/
body,ul,li,a {
  margin: 0;
  padding: 0;
}

body {
  font-family: 
  "Hiragino Kaku Gothic ProN",
  Meiryo,
  sans-serif;
}

/*layout*/
#nav {
  width: auto;
  height;autopx;
  margin: 30px 0 0 30px;
}
#nav li {
  list-style: none;
  font-size: 18px;
  border: 2px solid skyblue;
  margin-bottom: 8px;
  width: 200px;
  height: 40px;
}
#nav li a {
  text-decoration: none;
  color: skyblue;
  display: block;
  font-weight: bold;
  padding: 6px;
}

/*action*/
#nav li#product a:hover {
  background-color: skyblue;
  color: white;
}