html {
    background-color: #333;
    color: #EEE;
    font-family: 'Segoe UI', 'Helvetica Neue', 'Trebuchet MS', 'Helvetica', 'Arial', sans-serif;
    overflow-y: scroll;
}

body {
    margin: 0 auto;
    max-width: 50em;
    overflow: visible;
}

label {
    cursor: pointer;
}

h1 {
    font-size: 1.75em;
}

:link,
:visited {
    color: #4BF;
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

.pages > [type="radio"] {
    clip: rect(0 0 0 0);
    position: absolute;
    z-index: -1;
}

.pages__controller {
    display: table;
    table-layout: fixed;
    width: 100%;
}
.pages__controller:before, .pages__controller:after {
    content: ' ';
    display: table-cell;
    width: 50%;
}
_:-o-prefocus,
body:last-child .pages__controller,
body:last-child .pages__controller:before,
body:last-child .pages__controller:after {
    display: flex;
}

.pages__controller {
    list-style: none;
    margin: 0;
    padding: 0;
}

.pages {
    position: relative;
}
.pages__controller {
    background: #EEE;
    box-shadow: inset 0 0 0 3.375em #333;
    border-spacing: 1em 1em;
    font-size: 0.75em;
    margin-left: -0.375em;
    position: relative;
    z-index: 1;
}
@media only screen and (min-width: 35em) {
    .pages__controller {
        font-size: 1em;
        margin-left: 0;
    }
}
.pages__controller:before, .pages__controller:after {
    background-color: #333;
    -webkit-transition: width 0.25s ease-in-out;
    transition: width 0.25s ease-in-out;
}
.pages__controller:before {
    box-shadow: 1em 0 #333;
}
.pages__controller:after {
    box-shadow: -1em 0 #333;
}
.pages__controller-item {
    display: table-cell;
    height: 5em;
    position: relative;
    width: 5em;
    z-index: 1;
}
.pages__controller-item > [for^="page"] {
    background-color: #DDD;
    border-radius: 50%;
    -webkit-box-sizing: border-box;
    -moz-box-sizing: border-box;
    box-sizing: border-box;
    box-shadow: inset 0 0.25em 0.25em -0.25em black, 0 0 1px 2px #333, inset 0 -2em 1em -1em rgba(255, 255, 255, 0.25);
    color: black;
    display: block;
    height: inherit;
    line-height: 5;
    text-align: center;
    -webkit-transition: all 0.25s ease-in-out;
    transition: all 0.25s ease-in-out;
    white-space: nowrap;
    width: inherit;
}
.pages__controller-item > [for^="page"]:after {
    border: solid transparent;
    border-top-color: #DDD;
    border-width: 2em 2em 0 2em;
    content: '';
    left: 50%;
    margin: -2em 0 0 -2em;
    position: absolute;
    top: 100%;
    -webkit-transition: inherit;
    transition: inherit;
    z-index: -1;
}
.pages__controller:hover, [name="pages"]:focus ~ .pages__controller {
    background: #EB9;
}
#page1:checked ~ .pages__controller:before, #page5:checked ~ .pages__controller:after {
    width: 58%;
}
#page2:checked ~ .pages__controller:before, #page4:checked ~ .pages__controller:after {
    width: 54%;
}
#page3:checked ~ .pages__controller:before, #page3:checked ~ .pages__controller:after {
    width: 50%;
}
#page4:checked ~ .pages__controller:before, #page2:checked ~ .pages__controller:after {
    width: 46%;
}
#page5:checked ~ .pages__controller:before, #page1:checked ~ .pages__controller:after {
    width: 42%;
}
.pages__container {
    background: #333;
    -webkit-box-sizing: border-box;
    box-sizing: border-box;
    overflow: hidden;
    padding: 1em;
    position: relative;
    white-space: nowrap;
    width: 100%;
}
.pages__container-item {
    background: #333;
    -webkit-box-sizing: border-box;
    box-sizing: border-box;
    display: inline-block;
    height: 0;
    margin: -100% -50% 0;
    opacity: 0;
    padding: 1em 0;
    overflow: hidden;
    table-layout: fixed;
    -webkit-transition: margin 0.5s ease-in-out 0s, opacity 0.5s ease-in-out 0s, height 0s linear 0.5s;
    transition: margin 0.5s ease-in-out 0s, opacity 0.5s ease-in-out 0s, height 0s linear 0.5s;
    vertical-align: top;
    white-space: normal;
    width: 100%;
}

#page1:checked ~ .pages__controller > .pages__controller-item > [for="page1"], #page2:checked ~ .pages__controller > .pages__controller-item > [for="page2"], #page3:checked ~ .pages__controller > .pages__controller-item > [for="page3"], #page4:checked ~ .pages__controller > .pages__controller-item > [for="page4"], #page5:checked ~ .pages__controller > .pages__controller-item > [for="page5"] {
    background-color: #C30;
    color: #EEE;
    font-weight: bold;
}
#page1:checked ~ .pages__controller > .pages__controller-item > [for="page1"]:after, #page2:checked ~ .pages__controller > .pages__controller-item > [for="page2"]:after, #page3:checked ~ .pages__controller > .pages__controller-item > [for="page3"]:after, #page4:checked ~ .pages__controller > .pages__controller-item > [for="page4"]:after, #page5:checked ~ .pages__controller > .pages__controller-item > [for="page5"]:after {
    border-top-color: #C30;
    margin-top: -1.0625em;
}

#page1:checked ~ .pages__container > .pages__container-item--page1, #page2:checked ~ .pages__container > .pages__container-item--page2, #page3:checked ~ .pages__container > .pages__container-item--page3, #page4:checked ~ .pages__container > .pages__container-item--page4, #page5:checked ~ .pages__container > .pages__container-item--page5 {
    display: inline-table;
    height: 100%;
    margin: 0;
    opacity: 1;
    -webkit-transition: margin 0.5s ease-in-out 0s, opacity 0.5s ease-in-out 0s, height 0s linear 0s;
    transition: margin 0.5s ease-in-out 0s, opacity 0.5s ease-in-out 0s, height 0s linear 0s;
}

.bottom-navigation {
    background: #222;
    border-radius: 0.5em;
    overflow: hidden;
    margin-top: 3em;
    padding: 1em;
}

.bottom-navigation__previous { float: left; }
.bottom-navigation__next { float: right; }

.container-item__header--main-title h1 {
    border-bottom: thin solid;
    font-size: 3.5em;
    font-variant: small-caps;
    line-height: 1;
    margin: 0;
    padding-bottom: 0.25em;
}

@media only screen and (min-width: 35em) {
    .container-item__header--main-title h1 {
        font-size: 4.875em;
    }
}

.container-item__header--main-title h2 {
    font-weight: normal;
    margin: 0.375em;
}