@import url(https://fonts.googleapis.com/css?family=Oswald:400,300,700);
* {
    margin: 0;
    padding: 0;
}

body,
html {
    height: 100%;
    font-family: 'Oswald', sans-serif;
    background: #000;
    color: #fff;
}

section {
    height: 100%;
    position: relative;
    background-size: cover;
    overflow: hidden;
}

section,
section * {
    box-sizing: border-box;
}

#screen2 {
    background-image: url(../resources/mars-surface.jpg);
}

#screen3 {
    background-image: url(../resources/mars-rocks.jpg);
}

#screen4 {
    background-image: url(../resources/mars-mountains.jpg);
}

h1,
h2 {
    text-transform: uppercase;
    text-align: center;
}

h1 {
    font-size: 3.3em;
    color: #ea783b;
    position: absolute;
    width: 100%;
    top: 100px;
}

h2 {
    font-weight: 300;
    font-size: 2.2em;
    padding-top: 1em;
}

.light {
    background: radial-gradient(ellipse closest-side, rgba(252, 252, 252, 1) 0%, rgba(252, 245, 179, 0.81) 20%, rgba(241, 218, 54, 0) 100%);
}

.info {
    position: absolute;
    width: 25%;
    padding: 5em 2em 2em 2em;
    background: rgba(0, 0, 0, .5);
    line-height: 1.8em;
    font-weight: 300;
    top: 0;
    bottom: 0;
}

#mars {
    background: url(../resources/mars-horizon.png) center top no-repeat;
    position: absolute;
    background-size: contain;
    width: 100%;
    height: 40%;
    top: 50px;
}

#sun,
#shine {
    position: absolute;
    left: 50%;
}

#sun {
    width: 200px;
    height: 200px;
    margin-left: -100px;
    top: 100px;
}

#shine {
    width: 20px;
    height: 20px;
    top: 190px;
    margin-left: -10px;
    opacity: 0;
}

#skrollr-body {
    width: 100%;
    height: 100%;
    position: absolute;
}

#screen2 .info {
    width: 100%;
    top: 20%;
    bottom: 20%;
}

#screen2 img {
    float: left;
    margin-right: 3em;
    shape-outside: circle();
    max-width: 50%;
}

#screen3 .info {
    right: 0;
}

#viking {
    max-width: 40%;
    position: absolute;
    left: 15%;
}

#rover {
    max-width: 40%;
    position: absolute;
}

nav {
    position: fixed;
    right: 0;
    top: 50%;
    height: 200px;
    margin-top: -100px;
    opacity: .5;
    z-index: 99;
}

nav li {
    width: 10px;
    height: 10px;
    list-style: none;
    border: 2px solid #fff;
    border-radius: 50%;
    margin: 2em;
    cursor: pointer;
}

.active {
    background: #fff;
}