:root {
    --flex: 1;
}

* {
    -webkit-user-select: none;
    user-select: none;
}

html {
    height: 100%;
}
body {
    background: #0F0F1C;
    color: #fff;
    font-family: HelveticaNeue-Light, Helvetica, Arial, "Lucida Grande", sans-serif;
    font-size: 3.2em;
    height: 100%;
    padding-top: 59px;
    text-align: center;
    touch-action: none;
    width: 100%;
}

button {
    background-image: linear-gradient(to bottom, #000, #333);
    border: none;
    color: #fff;
    font-size: 1.2em;
    padding: 0.3em 0;
}
button:disabled {
    color: dimgrey;
}

.flex-v > div.flex {
    align-content: center;
    flex: var(--flex);
}

.small {
    font-size: 0.65em;
}