body {
    background-color: #111;
    color: #fff;
    font-family: sans-serif;
    text-align: center;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    height: 100vh;
}

#reader {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 40px;
    padding: 1em;
}

#controls {
    padding: 1em;
    background: #222;
}

input, button {
    margin: 0.5em;
}

textarea {
    width: 90%;
    height: 100px;
    resize: vertical;
    font-size: 1em;
}