Complete Code For Creating CSS Animation For Gradually Change Image Size.
<!DOCTYPE html> <html> <head> <title>How To Create Animation Using Z Index Property In CSS</title> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css"/> <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css"> </head> <style> * { box-sizing: border-box; } body { background-color: #777891; } #myDIV { width: 600px; height: 400px; background: red url('../image/demo1.jpg') no-repeat top left/5px 5px; animation: mymove 20s infinite; } @keyframes mymove { 50% { background: blue bottom right/200px 200px; } } </style> <body> <br/><br/> <div class="container"> <br> <div class="text-center"> <h1 id="color" style="color: white;">Animation Using Z Index Property In CSS</h1> </div> <div class="well"> <div id="myDIV"></div> </div> </div> </body> </html>