body {
    background: #e4e9f6;
    color: #424247;
    display: flex;
    flex-direction: column;
    font-family: 'Open Sans', sans-serif;
    font-size: 1em;
    line-height: 1.4;
    margin: 0;
    min-height: 100vh;
}

a {
    color: inherit;
}

nav, footer {
    background: #a40000;
    color: #fff;
    padding: 0 20%
}

nav ul, footer ul {
    display: flex;
    flex-wrap: wrap;
    margin: 0;
    padding: 0;
}

nav ul li, footer ul li {
    display: block;
    padding: 0 1em 0 0;
}

nav ul li a, footer ul li a {
    color: inherit;
    display: block;
    padding: 1em .5em 1em 0;
    text-decoration: inherit;
    transition: .2s;
}

nav ul li a:hover, nav ul li a:focus, footer ul li a:hover, footer ul li a:focus {
    color: #000;
    outline: none;
}

header {
    background: url(logo.svg), linear-gradient(to bottom right,  #050a02,  #000);
    background-position: 22% 45%;
    background-repeat: no-repeat;
    color: #efdddd;
    font-size: 1.5em;
    min-height: 250px;
    overflow: auto;
    padding: 3em 22%;
    text-shadow: .2em .2em .2em rgba(0, 0, 0, 0.5);
}

header>* {
    padding-left: 220px;
}

header h1 {
    font-size: 2.5em;
    font-weight: lighter;
    margin: .5em 0;
}

main {
    flex: 1;
}

section {
    padding: 0 20% 2em;
}

section:not(:last-child) {
    border-bottom: 1px dashed #ccc;
}

section h1 {
    background: linear-gradient(to bottom right,  #050a02,  #000);
    color: #e5dddd;
    font-size: 2.5em;
    margin: 0 -33.33% 1em;
    padding: 1em 33.33%
}

section h2, section h3, section h4 {
    font-weight: normal;
    margin: 1.5em 0 1em;
}

article {
    border-top: 1px solid transparent;
    position: relative;
    margin: 3em 0;
}

article aside {
    box-sizing: border-box;
    color: #aaa;
    font-size: .8em;
    right: -30%;
    top: .5em;
    position: absolute;
}

article:before {
    border-top: 1px dashed #ccc;
    content: "";
    display: block;
    left: -33.33%;
    position: absolute;
    right: -33.33%
}

pre {
    border-radius: 3px;
    background: #000;
    color: #d3d5db;
    margin: 0 -1em;
    overflow-x: auto;
    padding: 1em;
}

table {
    border-collapse: collapse;
    font-size: .8em;
    margin: auto;
}

table td {
    border: 1px solid #ccc;
    padding: .5em;
}

dl dt {
    margin-bottom: .5em;
    margin-top: 1em;
}
p>code, li>code, dt>code {
    background: #d1daf0;
}

@media (max-width: 800px) {
    body {
        font-size: 12pt;
    }

    header, section {
        padding-left: 2em;
        padding-right: 2em;
    }

    nav, footer {
        padding-left: 0;
        padding-right: 0;
    }

    nav ul, footer ul {
        justify-content: center;
    }

    nav ul li, footer ul li {
        padding: 0 .5em;
    }

    nav ul li a, footer ul li a {
        padding: 1em 0;
    }

    header {
        background-position: 50% 30px, 0 0;
        padding-bottom: 0;
        padding-top: 330px;
        text-align: center;
    }

    header>* {
        margin: 0;
        padding-left: 0;
    }

    section h1 {
        margin: 0 -.8em 1.3em;
        padding: .5em 0;
        text-align: center;
    }

    article aside {
        top: .5em;
        right: -1.5em;
    }

    article:before {
        left: -2em;
        right: -2em;
    }
}