<style>
body {
    font-family: 'Arial', sans-serif;
    margin: 0;
    padding: 20px;
    background-color: #f0f0f0;
    color: #333;
}

.container {
    max-width: 800px;
    margin: auto;
    background: white;
    padding: 20px;
    border-radius: 5px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

h2 {
    color: #444;
}

form input[type="number"],
form input[type="submit"] {
    width: 100%;
    padding: 10px;
    margin-top: 5px;
    margin-bottom: 20px;
    border-radius: 5px;
    border: 1px solid #ddd;
}

form input[type="submit"] {
    background-color: #007bff;
    color: white;
    cursor: pointer;
}

form input[type="submit"]:hover {
    background-color: #0056b3;
}

/* Stiluri pentru ecrane mai mici (dispozitive mobile) */
@media (max-width: 768px) {
    body {
        padding: 10px;
    }

    .container {
        padding: 10px;
    }

    form input[type="submit"] {
        -webkit-appearance: button;
        cursor: pointer;
    }
}
</style>
