body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f4f4f4;
    color: #333;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
}

.container {
    background-color: #fff;
    padding: 2em;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    width: 90%;
    max-width: 500px;
    text-align: center;
}

h1 {
    color: #0056b3;
    margin-bottom: 1.5em;
    font-size: 1.5em;
}

p {
    margin-bottom: 1em;
}

button {
    background-color: #007bff;
    color: white;
    padding: 12px 20px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 16px;
    width: 100%;
    transition: background-color 0.3s ease, transform 0.1s ease;
    display: block;
}

button:hover {
    background-color: #0056b3;
    transform: translateY(-2px);
}

button:active {
    transform: translateY(0);
}

/* Mobile-specific adjustments */
@media (max-width: 600px) {
    .container {
        width: 95%;
        padding: 1.5em;
    }

    h1 {
        font-size: 1.25em;
    }

    button {
        font-size: 18px; /* Larger touch target */
        padding: 15px;
    }
}