Flash Animation Effect
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HTML
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>Flash</title> </head> <body> <!-- copy --> <div class="circle flash"></div> <!-- end --> </body> </html>
CSS
.circle { width: 100px; height: 100px; background: #ad132a; border-radius: 50%; } .flash { animation-name: flash; animation-duration: 1s; animation-iteration-count: infinite; animation-delay: 1s; animation-fill-mode: both; } @keyframes flash { 0%, 50%, 100% { opacity: 1; } 25%, 75% { opacity: 0; } }
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