输入css颜色后字体不变色是为什么？
<!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>你好!</title>
<style type="text/css">
<h2>
{font-size:80;
color:#247;
}
</style>
</head>
<body>
<h2>yingyu</h2>
</body>
</html>
求解答~
