HTML Previewer Online - Ultimate Code Editor & Live Preview

HTML Editor
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Hello World</title>
<style>
body {
font-family: Arial, sans-serif;
margin: 0;
padding: 20px;
background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
min-height: 100vh;
display: flex;
align-items: center;
justify-content: center;
}
.container {
background: white;
padding: 40px;
border-radius: 10px;
box-shadow: 0 10px 30px rgba(0,0,0,0.2);
text-align: center;
max-width: 500px;
}
h1 {
color: #333;
margin-bottom: 20px;
}
p {
color: #666;
line-height: 1.6;
}
.btn {
background: #667eea;
color: white;
padding: 12px 24px;
border: none;
border-radius: 5px;
cursor: pointer;
margin-top: 20px;
font-size: 16px;
}
.btn:hover {
background: #5a6fd8;
}
</style>
</head>
<body>
<div class="container">
<h1>Welcome to HTML Previewer</h1>
<p>This is a sample HTML document. You can edit the code on the left and see the live preview here.</p>
<button class="btn" onclick="alert('Hello World!')">Click Me</button>
</div>
</body>
</html>
Preview