先来看看效果图
实例代码
<!DOCTYPE html>
<html>
<head lang="en">
<meta charset="UTF-8">
<title></title>
<style>
#box {
margin: 100px auto;
width: 200px;
height: 150px;
line-height: 150px;
letter-spacing: 10px;
text-align: center;
font-size: 30px;
font
