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<html><head><style> #myDIV { text-decoration: underline; animation: mymove 5s infinite;}@keyframes mymove { 50% { text-decoration-color: red; }}</style></head><body><h1>Animation of text-decoration-color</h1><p>Gradually change the color of the underline from black to red, and back:<p><div id="myDIV"> <p>This is a paragraph</p></div><p><strong>Note:</strong> The text-decoration-color does not work Edge prior 79.</p></body></html>