body
{
    background-color: #333333;
}

div#main
{
    position: relative;
    display: inline-block;
    margin: 0;
    top: 50%;
    left: 50%;
    margin-right: -50%;
    transform: translate(-50%, -50%)
}

div#msg
{
    font-size: 30px;
    font-weight: bold;
    color: #FFFFFF;
    font-style: Monospace;
}

textarea#key
{
    position: relative;
    height: 300px;
    width: 800px;
    background-color: #111111;
    border: none;
    font-weight: bold;
    color: #FFFFFF;
    font-style: Monospace;
    resize: none;
    display: block;
}

button#check
{
    position: relative;
    height: 50px;
    width: 100px;
    margin-left: auto;
    margin-right: auto;
    margin-top: 20px;
    background-color: #000000;
    font-weight: bold;
    color: #FFFFFF;
    font-style: Monospace;
    display: block;
}

button#check:hover
{
    background-color: #222222;
}

div#res
{
    display: none;
}