Create index.html file and implement as below code in it.
<div class="first div1"> <h1>opacity 0.1</h1> </div> <div class="second div1"> <h1>opacity 0.3</h1> </div> <div class="third div1"> <h1>opacity 0.6</h1> </div> <div class="div1"> <h1>opacity 1 (default)</h1> </div>
Complete Code For Opacity Property In CSS.
<!DOCTYPE html> <html> <head> <title>What Is The Use Opacity Property In CSS With Example</title> <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.1.0/jquery.min.js"></script> <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css"/> <script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"></script> </head> <style> body { background: black; } .div1 { background-color: red; } .first { opacity: 0.1; } .second { opacity: 0.3; } .third { opacity: 0.6; } </style> <body> <br/><br/> <div class="container"> <br><br><br> <div class="text-center"> <h1 id="color" style="color: white;">Opacity Property In CSS</h1> </div> <br> <div class="well"> <div class="first div1"> <h1>opacity 0.1</h1> </div> <div class="second div1"> <h1>opacity 0.3</h1> </div> <div class="third div1"> <h1>opacity 0.6</h1> </div> <div class="div1"> <h1>opacity 1 (default)</h1> </div> </div> <br> </div> </body> </html>