html,
body {
    width: 100%;
    height: 100%;
}

body {
    background: #000000;
    color: #ffffff;
    margin: 0;
    padding: 0;
    letter-spacing: 0.1em;
    word-spacing: 0em;

    font-family: Times, serif;
    font-family: "Courier New", Courier, monospace;

    font-size: 80%;
    line-height: 1.3;
}

@media (min-width: 40em) {
    body {
        font-size: 100%;
    }
}

@media (min-width: 80em) {
    body {
        font-size: 120%;
    }
}
a,
a:link {
    color: #ffffff;
}

a:visited {
    color: #ffffff;
}

#screen-header,
#screen-content {
    display: inline;
}

strong {
    text-transform: uppercase;
}

#cursor {
    display: inline;
}

[aria-hidden="true"] {
    display: none;
}

a.button {
    text-decoration: none;
    margin: 0;
    padding: 0 0.3em;
    border-radius: 2px;
    background: transparent;
    border: 1px solid currentColor;
    color: inherit;
    font: inherit;
    box-shadow: 1px 1px currentColor;
    display: inline-block;
}

a.button:hover {
    box-shadow: 0 0 white;
}

a.button.nav {
    display: inline-block;
    width: 80%;
    margin: 0.2em 0;
}
@media (min-width: 20em) {
    a.button.nav {
        width: 45%;
    }
}
@media (min-width: 40em) {
    a.button.nav {
        width: auto;
        margin: 0;
    }
}

.nav-separator {
    display: none;
}
@media (min-width: 40em) {
    .nav-separator {
        display: inline-block;
    }
}

.invert {
    background: #fff;
    color: #000;
}

.pre {
    white-space: pre;
}

.hr {
    display: block;
    white-space: pre;
    max-width: 100%;
    overflow: hidden;
}

.lang-nav {
    position: absolute;
    right: 0;
    top: 0;
}

.lang-nav a {
    text-decoration: none;
    padding: 0 0.4em;
}
.lang-nav .current {
    background: #fff;
    color: #000;
}