All popular CSS Frameworks offer responsive design.
They are free, and easy to use. For more W3.CSS templates go to the Responsive Templates chapter. W3.CSS is a modern CSS framework with support for desktop, tablet, and mobile design by default.
W3.CSS is smaller and faster than similar CSS frameworks.
W3.CSS is designed to be a high quality alternative to Bootstrap.
W3.CSS is designed to be independent of jQuery or any other JavaScript library.
<!DOCTYPE html>
<html>
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="https://www.w3schools.com/w3css/4/w3.css">
<body>
<div class="w3-container w3-green">
<h1>W3Schools Demo</h1>
<p>Resize this responsive page!</p>
</div>
<div class="w3-row-padding">
<div class="w3-third">
<h2>London</h2>
<p>London is the capital city of England.</p>
<p>It is the most populous city in the United Kingdom, with a metropolitan area of over 13 million inhabitants.</p>
</div>
<div class="w3-third">
<h2>Paris</h2>
<p>Paris is the capital of France.</p>
<p>The Paris area is one of the largest population centers in Europe, with more than 12 million inhabitants.</p>
</div>
<div class="w3-third">
<h2>Tokyo</h2>
<p>Tokyo is the capital of Japan.</p>
<p>It is the center of the Greater Tokyo Area, and the most populous metropolitan area in the world.</p>
</div>
</div>
</body>
</html>
Another popular CSS framework is Bootstrap. Bootstrap uses HTML, CSS and jQuery to make responsive web pages.
