body {
    font-family: sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
    background-color: #f0f2f5;
}

#container {
    background-color: #fff;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    width: 400px;
    text-align: center;
}

h1 {
    color: #333;
}

textarea {
    width: calc(100% - 22px);
    height: 100px;
    padding: 10px;
    margin-top: 5px;
    border: 1px solid #ddd;
    border-radius: 4px;
}

button {
    padding: 10px 20px;
    background-color: #007bff;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    margin: 10px 5px;
}