*	{
        box-sizing: border-box;
        padding: 0;
        margin: 0;
        word-wrap: break-word;
        }

img 	{
        max-width:100%;
        height:auto;
        padding:0px;
        }

body	{
        background-color: grey;
        font-family: Arial, Helvetica, sans-serif;
        font: normal 1em;
        }
        
header  {
        width:100%;
        color:yellow;
        background-color:orchid;
        border-radius:25px;
        margin-top:20px;
        margin-bottom:20px;
        padding:10px;
        overflow:auto;
        }

header img {
        float:left;
        margin:10px;
        border-radius:50%;
        }
        
header h1 {
        font-size: 2.2em;
        margin: 15px 15px 15px 120px;
        }
        
header h2 {
        font-size: 1.3em;
        margin-left: 50%;
        }
        
nav	{
        padding: 10px;
        }
        
article {
        padding: 10px;
        font-family: Arial, Helvetica, sans-serif;
        color: black;
        }
        
#hauptbereich {
        width: 100%;
        background-image: url("bilder/bg_blau.jpg");
        margin-top: 20px;
        margin-bottom: 20px;
        padding: 15px;
        border-radius: 25px;
        }

nav li	{
        background-color: orchid;
        border-radius: 15px;
        margin-top: 10px;
        margin-bottom: 10px;
        padding: 10px;
        font-size: 1.3em;
        list-style: none;
        }
        
nav a	{
        color: black;
        text-decoration: none;
        }
        
nav a:hover {
        color: white;
        }
        
h1	{
        margin-top: 30px;
        padding-bottom: 20px;
        }
        
p	{
        margin-top: 10px;
        margin-bottom: 10px;
        }
        
figure	{
        margin: 10px;
        }
        
a.tooltip,
a.tooltip:link,
a.tooltip:visited,
a.tooltip:active {
    position: relative;
    text-decoration: none;
    font-weight: bold;
    border-bottom:0px dotted #4dbcf3;
    }
    
a.tooltip:hover {
    background: transparent;
    z-index: 100;
    }

a.tooltip span {
    display: none;
    text-decoration: none;
    }

a.tooltip:hover span {
    display: block;
    position: absolute;
    top: 30px;
    left: 0;
    width: 181px;
    z-index: 100;
    color: #000000;
    border: 1px solid;
    border-color: #FFFFFF #D5D7DB #D5D7DB #FFFFFF;
    border-left: 4px solid #000000;
    padding: 2px 10px 2px 10px;
    background-image: url(../bilder/bg_blau.jpg);
    font-family: Verdana, Arial, Helvetica, Sans-serif;
    font-style: Normal;
    text-align: left;
    }

@media only screen and (min-width: 600px) {
        nav li {
            display: inline-block;
            border-radius: 10px;
            margin-right: 2%;
            padding: 5px;
            font-size: 1.1em;
        }
        
        article {
            width: 60%;
            float: left;
        }
        
        #hauptbereich {
            overflow: auto;
        }
 }    
        
@media only screen and (min-width: 768px) {
        #gesamt {
            width: 70%;
            margin: auto;
        }
        
        nav {
            float: left;
            width: 25%;
        }
        
        article {
            width: 50%;
            margin-top: 20px;
        }
        
        nav li {
            display: block;
            padding: 10px;
            font-size: 1.3em;
        }
 }