Animated Gradient Background
CSS
Hard
2 views
Problem Description
Animate a gradient background on a banner.
Output Format
Print the HTML+CSS code in one block.
Constraints
Use background-size and keyframes on background-position.
Official Solution
<!doctype html>
<html lang='en'>
<head>
<meta charset='utf-8'>
<meta name='viewport' content='width=device-width, initial-scale=1'>
<title>meetcode</title>
<style>
@keyframes move { 0% { background-position: 0% 50%; } 50% { background-position: 100% 50%; } 100% { background-position: 0% 50%; } }
.banner { padding: 24px 16px; border-radius: 16px; color: #fff; background: linear-gradient(120deg, #0b5, #0a58ca, #c1121f); background-size: 200% 200%; animation: move 5s ease infinite; }
</style>
</head>
<body>
<div class='banner'>meetcode</div>
</body>
</html>
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