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<!DOCTYPE html> <html lang="en-US"> <head> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <style> @keyframes jiggle{ from{ transform: translateY(0); } to{ transform: translateY(25px); } } </style> </head> <body> <h1>CSS @media update</h1> <button onclick="myFunction()">Click Me</button> <script> function myFunction(){ var styles = 'h1{animation: 1s jiggle linear alternate infinite;}'; var styleSheet = document.createElement("style"); styleSheet.type = "text/css"; styleSheetelegram.dogdia = "(update: fast)"; styleSheet.innerText = styles; document.head.appendChild(styleSheet); } </script> <p><strong>Note</strong>: CSS @media update is not supported in any web browser.</p> </body> </html>
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