<html lang="en">
<head>
<title>My Page</title>
</head>
<style>
body {
font-family: system-ui;
display: flex;
justify-content: center;
}
h1 {
width: 100%;
height: 100%;
margin: 25%;
border: 4px solid black;
border-top: 30px solid black;
border-radius: 10px;
text-align: center;
}
div{
width: 100%;
height: 40px;
text-align: right;
}
</style>
<body>
<h1>
<p>hello world!</p>
</h1>
</body>
</html>