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<title>W3.CSS</title>
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<link rel="stylesheet" href="https://www.w3schools.com/w3css/4/w3.css">
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<h2>Full-width</h2>
<p>The <strong>w3-block</strong> class can create a full-width button.</p>
<p><button class="w3-button w3-block w3-black">Button</button></p>
<p><button class="w3-button w3-block w3-circle w3-teal">Button</button></p>
<img class="w3-image w3-block" src="img_snowtops.jpg" alt="Norway" style="height:400px">
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