<!DOCTYPE html>
<html>
<head>
<title>W3.CSS(w3cschool.cn)</title>
<meta name="viewport" content="width=device-width, initial-scale=1" charset="UTF-8">
<link rel="stylesheet" href="https://7npmedia.w3cschool.cn/w3.css">
</head>
<body>
<div class="w3-container">
<h2>Button 颜色</h2>
<p><button class="w3-button w3-red">Red</button></p>
<p><button class="w3-button w3-pink">Pink</button></p>
<p><button class="w3-button w3-purple">Purple</button></p>
<p><button class="w3-button w3-deep-purple">Deep Purple</button></p>
<p><button class="w3-button w3-indigo">Indigo</button></p>
<p><button class="w3-button w3-blue">Blue</button></p>
<p><button class="w3-button w3-light-blue">Light Blue</button></p>
<p><button class="w3-button w3-cyan">Cyan</button></p>
<p><button class="w3-button w3-aqua">Aqua</button></p>
<p><button class="w3-button w3-teal">Teal</button></p>
<p><button class="w3-button w3-green">Green</button></p>
<p><button class="w3-button w3-light-green">Light Green</button></p>
<p><button class="w3-button w3-lime">Lime</button></p>
<p><button class="w3-button w3-sand">Sand</button></p>
<p><button class="w3-button w3-khaki">Khaki</button></p>
<p><button class="w3-button w3-yellow">Yellow</button></p>
<p><button class="w3-button w3-amber">Amber</button></p>
<p><button class="w3-button w3-orange">Orange</button></p>
<p><button class="w3-button w3-deep-orange">Deep Orange</button></p>
<p><button class="w3-button w3-brown">Brown</button></p>
<p><button class="w3-button w3-blue-grey">Blue Grey</button></p>
<p><button class="w3-button w3-light-grey">Light Grey</button></p>
<p><button class="w3-button w3-grey">Grey</button></p>
<p><button class="w3-button w3-dark-grey">Dark Grey</button></p>