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<html><title>W3.CSS</title><meta name="viewport" content="width=device-width, initial-scale=1"><link rel="stylesheet" href="https://www.w3schools.com/w3css/5/w3.css"><link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css"><body><div class="w3-container"> <h2>Circular Ripple Buttons</h2> <a class="w3-button w3-circle w3-xlarge w3-red w3-ripple"><i>+</i></a> <a class="w3-button w3-circle w3-xlarge w3-teal w3-ripple"><i class="fa fa-plus"></i></a> <a class="w3-button w3-circle w3-xlarge w3-black w3-ripple"><i class="fa fa-plus"></i></a></div></body></html>