カーソル合わせると変化します。
<style> #frame1 { background-color: black; } .neonsign { font-size: 80px; color: #550000; padding: 20px; } .neonsign:hover { color: #882222; text-shadow: 0 0 45px #ff5555; text-decoration: blink; animation: blink 0.5s step-end infinite; -webkit-animation: blink 0.5s step-end infinite; } @keyframes blink { 90% { opacity: 0.5; } 35% { opacity: 0.5; } } @-webkit-keyframes blink { 90% { opacity: 0.5; } 35% { opacity: 0.5; } } </style> <div id="frame1"> <div class="neonsign"> Neon Sign </div> </div>