Вот HTML:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<link rel="stylesheet" href="style.css">
</head>
<body>
<div class="parent">
<div class="row">
<span>Name:</span>
<input type="text"><br>
</div>
<div class="row">
<span>Surname:</span>
<input type="text">
<input class="small" type="text">
</div>
</div>
</body>
</html>
И CSS:
.parent {
display: flex;
justify-content: center;
align-items: center;
flex-direction: column;
width: 400px;
padding: 10px;
border: 1px dashed red;
}
.row {
width: 260px;
display: flex;
flex-direction: column;
justify-content: space-between;
align-items: space-between;
}
.small {
width: 40px;
margin-top: 6px;
}