@font-face {
    font-family: "DINdong";
    src:
        local("DINdong"),
        url("DINdong.woff") format("woff");
}

html {
    box-sizing: border-box;
    font-size: 16px;
}

*,
*:before,
*:after {
    box-sizing: inherit;
}

body,
h1,
h2,
h3,
h4,
h5,
h6,
p,
ol,
ul {
    margin: 0;
    padding: 0;
    font-weight: normal;
}

ol,
ul {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
}

html,
body {
    height: 100%;
    overflow: hidden;
}

body {
    font-family: "DINdong", sans-serif;
    background-color: #f59c00;
    text-align: center;
    display: flex;
    flex-direction: column;
}

#screen {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

#panel {
    flex: 0;
}

a {
    color: inherit;
    text-decoration: none;
}

ul {
    font-size: 36pt;
}

ul li {
    display: none;
}

ul li.visible {
    display: inline-block;
}

ul li a {
    pointer-events: none;
}

ul.complete li a {
    pointer-events: all;
}

.button {
    font-size: 24pt;
    display: inline-block;
    padding: 18pt;
    border: 1px solid;
    margin: auto;
    box-shadow: #000 6pt 6pt 0;
    margin: 36pt;
    transition: all .1s;
}

.button:hover {}

.button.active {
    box-shadow: #000 2pt 2pt 0;
    transform: translate(4pt, 4pt);
    pointer-events: none;
}

.button:active {
    box-shadow: inset #000 0pt 0pt 0;
    transform: translate(6pt, 6pt);
}

#links.complete a {
    text-decoration: underline;
}