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<title>W3.CSS</title>
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="lib/w3.css">
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<div class="w3-container">
<h1>Background Colors</h1>
<p>The w3-color class defines a background color for an element:</p>
<div class="w3-container w3-red">
<h2>London</h2>
<p>London is the most populous city in the United Kingdom, with a metropolitan area of over 9 million inhabitants.</p>
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<div class="w3-container w3-teal">
<h2>London</h2>
<p>London is the most populous city in the United Kingdom, with a metropolitan area of over 9 million inhabitants.</p>
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<div class="w3-container w3-yellow">
<h2>London</h2>
<p>London is the most populous city in the United Kingdom, with a metropolitan area of over 9 million inhabitants.</p>
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