changelog.css

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

body {
    font-family: "Avenir Next", Helvetica, sans-serif;
    font-size: 16px;
    line-height: 1.35;
    background-color: #002630;
    color: #889797;
    padding: 5px 25px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

main, header, .menu { transition: all .2s ease-in; backface-visibility: hidden; transform: translateZ(0); }

header { width: 100%; padding-top: 20px; }

h1 { font-size: 18px; margin-bottom: 30px; margin-top: 0; display: inline-block; }
h2 { font-size: 16px; margin-bottom: 15px; }
h3 { font-size: 14px; }
nav ul { list-style: none; margin: 0; padding: 0; }

small { font-size: 70%; }
.fr { float: right; }

main { width: 100%; }

.menu {
    z-index: 2;
    position: fixed;
    top: 0;
    left: 0;
    height: 100%;
    width: 400px;
    transform: translateX(-100%) translateZ(0);
    overflow: auto;
    padding: 40px 20px;
    background-color: white;
    font-size: 14px;
    white-space: nowrap;
    box-shadow: 0 0 5px rgba(0,0,0,0.2);
}

.menu > ul > li:not(:first-child) { margin-top: 40px; }
.menu > ul > li > ul { margin-left: 25px; margin-top: 10px; }
.menu > ul > li > ul > li:not(:first-child) { margin-top: 2px; }
.menu a { color: #222; text-decoration: none; }

.menu-label { background-color: #fff; padding: 9px 14px; }

.menu-trigger {
    z-index: 3;
    visibility: hidden;
    opacity: 0;
    position: fixed;
    top: 0;
    left: 0;
    width: 40px;
    height: 40px;
    margin: 0;
    background-color: transparent;
    transition: all .2s ease-in;
    -webkit-appearance: none;
}

.menu-trigger::after {
    content: '✕';
    position: absolute;
    font-size: 24px;
    top: 50%;
    left: 50%;
    transform: translate(-50%,-50%);
    color: #222;
}

.menu-trigger:checked {
    opacity: 1;
    visibility: visible;
}

.menu-trigger:checked ~ .menu {
    transform: translateX(0) translateZ(0);
}

.menu-trigger:checked ~ main,
.menu-trigger:checked ~ header {
    width: calc(100% - 400px);
    transform: translateX(400px) translateZ(0);
}

.handorgel { margin-bottom: 60px; }
.handorgel__header--opened { position: sticky; top: 0; }

pre {
    font-family: Consolas, "Andale Mono WT", "Andale Mono", "Lucida Console", 
        "Lucida Sans Typewriter", "DejaVu Sans Mono", "Bitstream Vera Sans Mono", 
        "Liberation Mono", "Nimbus Mono L", Monaco, "Courier New", Courier, monospace;
    tab-size: 4;
    max-height: 500px;
    overflow: auto;
    font-size: 13px;
    background-color: #002630;
    color: #889797;
}