html, body {
    margin: 0;
    padding: 0;
}

html.home { 
  background: url(images/forside.jpg) no-repeat center center fixed; 
  -webkit-background-size: cover;
  -moz-background-size: cover;
  -o-background-size: cover;
  background-size: cover;
}

html.about { 
  background: url(images/about.jpg) no-repeat center center fixed; 
  -webkit-background-size: cover;
  -moz-background-size: cover;
  -o-background-size: cover;
  background-size: cover;
}

html.contact { 
  background: url(images/contact.jpg) no-repeat center center fixed; 
  -webkit-background-size: cover;
  -moz-background-size: cover;
  -o-background-size: cover;
  background-size: cover;
}

#content {
    width: 40%;
    position: fixed;
    right: 40px;
    top: 200px;
}

body, a {
    font-family: Arial, Helvetica, sans-serif;
    color: #000;
}
a {
    text-decoration: none;
}
#logo {
    position: fixed;
    top: 15px;
    left: 15px;
    width: 150px;
}

#nav {
    position: fixed;
    top: 20px;
    right: 20px;
}

#nav a {
    padding: 0 10px 0 10px;
    text-transform: uppercase;
    font-weight: 900;    
}

#nav a.active {
    text-decoration: none;
    color: #00aeef;   
}

@media screen and (max-width: 420px) {
    #nav {
        position: absolute;
        top: 22px;
        right: 15px;
    }

    #nav a {
        padding: 0 5px 0 5px;
        text-transform: uppercase;
        font-weight: 900; 
        font-size: 14px;   
    }

    html.about #content {
        width: 82%;
        position: absolute;
        left: 18px;
        top: 145px;
        background: #fff;
        padding: 20px;
        line-height: 20px;
        font-size: 14px;
    }

    html.home, html.about {
        background-position: 0px 60px;
    }

    html.contact {
        background-position: -200px 60px;
    }
}