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代码编辑器：
<!DOCTYPE html> <meta charset="utf-8"><link href="/static/next/css/tryit.css?v=2017082407" rel="stylesheet"/> <style> .button { background-color: #4CAF50; /* Green */ border: none; color: white; padding: 15px 32px; text-align: center; text-decoration: none; display: inline-block; font-size: 16px; margin: 4px 2px; cursor: pointer; } .button1 {font-size: 10px;} .button2 {font-size: 12px;} .button3 {font-size: 16px;} .button4 {font-size: 20px;} .button5 {font-size: 24px;} </style> <h2>按钮大小</h2> <p>我们可以使用 font-size 属性来设置按钮大小:</p> <button class="button button1">10px</button> <button class="button button2">12px</button> <button class="button button3">16px</button> <button class="button button4">20px</button> <button class="button button5">24px</button> <footer>简单教程，简单编程<br/>Copyright © 简单教程 www.twle.cn</footer>
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