* {
    margin: 0;
    padding: 0;
    border-style: none;
}
html, body {
    width: 100%; height: 100%;
}
body {
    background-color: #000;
    font-family: Monaco, "Courier New", monospace;
    font-size: 13px;
}
textarea {
    display: block;
    position: absolute;
    top: 0; right: 0; bottom: 5%; left: 0;
    width: 100%; height: 95%;
    background-color: #000;
    color: #0f0;
}
button {
    display: block;
    position: absolute;
    bottom: 0; right: 0; left: 0;
    width: 100%; height: 5%;
    color: #000;
    background-color: #0f0;
}