body {
    font-family: Arial, sans-serif;
    background-color: #f4f4f4;
}

.container {
    width: 50%;
    margin: 0 auto;
    text-align: center;
    padding-top: 50px;
}

textarea {
    width: 100%;
    height: 100px;
    margin-bottom: 20px;
}

button {
    padding: 10px 20px;
    font-size: 16px;
    margin: 10px;
}

#displayArea {
    font-size: 48px;
    color: #333;
    margin: 50px 0;
    min-height: 60px;
    transition: opacity 0.1s;
    opacity: 1;
}

h1, h2 {
    color: #333;
}