body {
    font-family: 'Roboto', sans-serif;
    background-color: #f4f4f4;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100vh;
    margin: 0;
    padding: 0;
}

button {
    background-color: #3498db;
    border: none;
    color: white;
    padding: 12px 24px;
    text-align: center;
    text-decoration: none;
    font-size: 16px;
    cursor: pointer;
    border-radius: 4px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
    transition: background-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
}

button:hover {
    background-color: #2980b9;
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.3);
}

button:active {
    background-color: #2980b9;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
    transform: translateY(2px);
}

input[type="text"] {
    padding: 6px 12px;
    font-size: 16px;
    border: 1px solid #ccc;
    border-radius: 4px;
}

#feedback {
    margin-top: 12px;
}