<!DOCTYPE html>
<html>
<head>
<title>Title of the document</title>
<style>
input[name="age"] {
width: 50px;
}
</style>
</head>
<body>
<h1>Example of applying a CSS style to the element name:</h1>
<form>
<input type="text" placeholder="Name">
<input type="number" name="age" min="0" placeholder="Age">
</form>
</body>
</html>