html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>块元素居中对齐</title>
<style>
/* 使box居中对齐 */
body {
display: flex; /* 代码1 */
}
.box {
width: 200px;
height: 100px;
background-color: lightcoral;
margin: auto; /* 代码2 */
}
</style>
</head>
<body>
<div class="box">
<p>我是里面的文字</p>
</div>
</body>
</html>