body {
font-family: Arial, sans-serif;
}
.container {
width: 300px;
margin: 0 auto;
padding: 20px;
border: 1px solid #ccc;
border-radius: 5px;
}
input[type="text"], input[type="number"] {
width: 100%;
padding: 8px;
margin: 5px 0;
box-sizing: border-box;
}
input[type="submit"] {
width: 100%;
padding: 10px;
margin-top: 10px;
background-color: #4CAF50;
color: white;
border: none;
border-radius: 4px;
cursor: pointer;
}
