<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Document</title>
<style>
body {
text-align: center;
color: #fff;
line-height: 80px;
}
h1 {
/* inline不能设置宽高,没有 */
/* display: inline;
height: 20px;
padding: 10%; */
/* display-inline 我们称之为行内块，可以设置宽高，拥有一切属性 */
/* display: inline-block;
height: 30px; */
/* display: block 块级元素，占满一行 */
display: block;
width: 80px;
height: 80px;
background-color: #000;
}
h2 {
display: inline-block;
width: 80px;
height: 80px;
background-color: #000;
/* text-align: center; */
}
h3 {
display: inline;
width: 80px;
height: 80px;
background-color: #000;
}
</style>
</head>
<body>
<h1>块级元素</h1>
<h2>行间块</h2>
<br>
<h3>行内(没有宽高，我能怎么办)</h3>
</body>
</html>
