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<!DOCTYPE html>

<html lang=en>

<head>

  <meta charset=UTF-8>

  <meta name=viewport content="width=device-width,initial-scale=1">

  <title>CSS Animation Instead of blink</title>

  <style>body{font-family:system-ui,sans-serif;margin:0;padding:1.5rem;background:#f8fafc;color:#334155}h1{margin:0 0 .75rem;font-size:1.25rem;color:#0f172a}p{margin:0 0 .75rem;line-height:1.7;font-size:.95rem;max-width:520px}.pulse-alert{color:#b91c1c;font-weight:700;animation:pulse-text 1.5s ease-in-out infinite}@keyframes pulse-text{0%,100%{opacity:1}50%{opacity:.4}}@media (prefers-reduced-motion:reduce){.pulse-alert{animation:none}}.tip{background:#f0fdf4;border:1px solid #bbf7d0;border-radius:8px;padding:.75rem 1rem;font-size:.875rem;color:#166534;max-width:440px}</style>

</head>

<body>

  <h1>CSS Instead of &lt;blink&gt;</h1>

  <p>

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  </p>

  <p class=tip>Use <code>prefers-reduced-motion</code> so users who disable animations are not forced to see flashing text.</p>

</body>

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Modern Replacement — CSS Animation