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<!DOCTYPE html> <html> <head> <style> #myDIV { border: 1px solid black; width: 400px; height: 100px; animation: mymove 5s infinite; } @keyframes mymove { 50% {font-weight: bold;} } </style> </head> <body> <h1>Animation of font-weight</h1> <p>Gradually change the font-weight from normal to bold, and back to normal:<p> <div id="myDIV"> <p>This is a paragraph</p> </div> </body> </html>
