html, body {
    font-family: Arial, Helvetica, sans-serif;
    max-width: 900px;
    background-image: url(../images/dunkel02.jpg);
}

nav, main, header, footer, article {
        border-style: solid;
        padding: 10px;
        margin-bottom: 10px;                                       /*  Aussenabstand */
        border-radius: 20px;

}

header {
    background-color: #f1f3f4;
    border-color: #d5d5d5;
}

nav {
    float: left;
    width: 170px;
    background-color: #fffbf0;
    border-color: #e7c157;
}

nav li {
    list-style: none;
    margin-bottom: 10px;
}

nav a {
    text-decoration: none;
    color: #333;
    font-weight: bold;
}

nav ul a:hover,                                                 /* Attribute gelten für hover (mouse over) als auch für active links */
nav ul a:active {
    color: #fffbf0;
    background-color: #e7c157;
}

main {
    margin-left: 200px;                                         /* margin (Abstand bis Text beginnt) */
    background-color: #c4ced3;
    border-color: #8a9da8;
}

article {
    background-color: #ffede0;
    border-color: #df6c20;
}

footer {
    background-color: #e4ebf2;
    border-color: #8a9da8;   
}
   
#startlink, #startlink:visited {
    color: #e4ebf2;
    background-color: #222222;
    border: solid #151515;    
    text-decoration: none;
}

#startlink:hover {
    color: #2B2B80;
    background-color: #e4ebf2;
}

#startlink:focus {
    font-weight: bold;
    color: #2B2B80;
    border-color: #2B2B80;
}