body {
    font-family: Arial, sans-serif;
    background: #f4f4f9;
    margin: 0;
    padding: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
}

.container {
    background: white;
    padding: 25px;
    border-radius: 12px;
    box-shadow: 0px 6px 15px rgba(0,0,0,0.1);
    width: 400px;
    text-align: center;
}

h2 {
    margin-bottom: 20px;
    color: #333;
}

label {
    display: block;
    font-weight: bold;
    margin-bottom: 8px;
    text-align: left;
}

input[type="number"] {
    width: 100%;
    padding: 10px;
    margin-bottom: 15px;
    border-radius: 8px;
    border: 1px solid #ccc;
    font-size: 16px;
}

button {
    background: #4CAF50;
    color: white;
    padding: 12px 18px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-size: 16px;
    transition: 0.3s;
}

button:hover {
    background: #45a049;
}

a {
    display: inline-block;
    margin-top: 15px;
    text-decoration: none;
    color: #007bff;
    font-weight: bold;
}

a:hover {
    text-decoration: underline;
}

img {
    margin-top: 15px;
    border-radius: 10px;
    box-shadow: 0px 4px 12px rgba(0,0,0,0.2);
}