body {
    margin: 0;
    color: #333;
    font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
    font-size: 18px;
    font-weight: 300;
}

pre, code, samp {
    font-family:
        Consolas, "Liberation Mono", Menlo, "Courier New", Courier, monospace;
}

pre {
    background-color: #477093;
    padding: 1.5em 20px;
    border-radius: 5px;
    overflow: scroll;
    color: rgba(255, 255, 255, 0.6);
    font-size: 14px;
}

pre em {
    font-style: normal;
    text-shadow: 0 -1px grey;
    color: white;
}

pre.comment {
    background-color: #EEF4F9;
    color: #888;
    border: 1px dashed #477093;
}

pre.comment em {
    color: #333;
    text-shadow: none;
}

code, samp {
    background-color: #EEF4F9;
    padding: 1px 3px;
    border-radius: 3px;
    font-size: 14px;
}

nav > *, header > *, main, footer {
    max-width: 760px;
    padding-left: 230px;
}

@media(max-width: 1240px) {
    nav > *, header > *, main > *, footer {
        padding-left: 150px;
    }
}

@media(max-width: 1060px) {
    nav > *, header > *, main > *, footer {
        padding-left: 100px;
        padding-right: 100px;
    }
}

@media(max-width: 900px) {
    nav > *, header > *, main > *, footer {
        padding-left: 50px;
        padding-right: 50px;
    }
}

@media(max-width: 680px) {
    nav > *, header > *, main > *, footer {
        padding-left: 20px;
        padding-right: 20px;
    }
}

nav {
    position: fixed;
    width: 100%;
    z-index: 1;

    border-bottom: 1px solid #68a;
    color: white;
    opacity: 0.95;
}

nav, .spacer {
    padding: 0.75em 0;
    font-size: 14px;
    background-color: #222;
}

nav a {
    margin-left: 2em;
}

nav a.first {
    margin-left: 0;
    font-weight: 600;
    font-size: 16px;
}

header {
    background-color: #4C6F8C;
    background: linear-gradient(#395E7E, #4A79A0);
    color: white;
    padding: 50px 0;
    margin-bottom: 50px;
}

h1 {
    margin: 0;
    font-size: 60px;
    font-weight: 100;
}

header > h2 {
    margin: 0;
    font-size: 24px;
    font-weight: 100;
    position: relative;
    left: 3px;
}

header > h3 {
    margin: 0;
    font-size: 14px;
    font-weight: 300;
    position: relative;
    left: 4px;
    opacity: 0.5;
}

h2 {
    margin-top: 2em;
    font-size: 36px;
    font-weight: 100;
}

hr {
    border: none;
    height: 40px;
}

footer {
    font-size: 14px;
    margin-top: 150px;
    margin-bottom: 20px;
    opacity: 0.6;
}

a {
    text-decoration: none;
    color: white;
    background-color: red;
}

a[href=""] {
    color: white !important;
    background-color: red !important;
}

a:hover {
    text-decoration: underline;
}

header a:hover {
    text-decoration: none;
}

main a[href], footer a[href] {
    background-color: #edd;
    color: #844;
    letter-spacing: -0.5px;
    padding: 0 2px;
    border-radius: 3px;
}

header a[href], nav a[href] {
    color: inherit;
    background-color: transparent;
    letter-spacing: inherit;
}

a[href] code {
    background-color: transparent;
}

span.cpp, span.cc {
    font-size: 90%;
}

span.eleven {
    font-size: 85%;
}

span#note:target {
    background-color: yellow;
}

.pane {
    float: left;
    width: 49%;
}

.hack {
    clear: both;
}

.pane.left > * {
    margin-right: 10px;
}

.pane.right > * {
    margin-left: 10px;
}

main > h3 {
    font-size: 30px;
    font-weight: 100;
    margin-top: 2em;
    color: black;
}

h3 {
    margin-top: 0;
    margin-bottom: 0;
    font-weight: inherit;
}

.pane pre {
    font-size: 14px;
    padding-top: 20px;
    padding-bottom: 20px;
    line-height: 1.15;
}

header {
    position: relative;
    overflow: hidden;
}

div.back {
    position: absolute;
    bottom: -0.2em;
    left: -40px;
    font-size: 288px;
    font-weight: bold;
    letter-spacing: 20px;
    opacity: 0.1;
    text-shadow: -20px 20px #444;
    white-space: nowrap;
}

.panes {
    clear: both;
    margin-top: 2em;
    margin-bottom: 2em;
    overflow: auto;
}

.tutorial-footer {
    margin-top: 4em;
}

.tutorial-footer.next {
    font-weight: 100;
    font-size: 24px;
}

.tutorial-footer.next a[href] {
    font-weight: 300;
}

li {
    margin-top: 5px;
}