<!DOCTYPE html>
<html lang="ru">
<head>
<meta charset="UTF-8">
<style>
body {
margin: 0;
height: 100vh;
display: flex;
justify-content: center;
align-items: center;
background: #fafafa;
font-family: sans-serif;
}
.text {
text-align: center;
padding: 20px;
background: white;
border-radius: 12px;
box-shadow: 0 4px 16px rgba(0,0,0,0.1);
}
</style>
</head>
<body>
<div class="text">
Привет!
</div>
</body>
</html>