body {
    background-color: #eee;
    color: #454545;
    line-height: 1.4;
    max-width: 650px;
    margin: 40px auto;
    padding: 0 10px;
    font-size: 18px;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}
h1, h2, h3 {
    line-height: 1.2;
}

#keycodefinder {
    text-align: center;
}
#keycode {
    font-size: 10em;
    text-align: center;
}
#pressedkey div {
    border: 1px solid #333;
    background-color: #fff;
    padding: 2px 10px;
    border-radius: 5px;
    display: inline-block;
    font-size: 0.75em;
}