* {
    margin: 0;
    padding: 0;
}

body {
     text-align: center;
     background-image: url(../images/background/bgimage1.jpg);
     background-attachment: fixed;
     background-size: 100% 100% /* für alte IEzur Zentrierung */
 }


header, hav, footer, aside,article, section {
    display: block;
}

#wrapper {
    background-image: url(../images/background/durchsichtig.png);
    width: 900px;
    margin: 0 auto;
    text-align: left;   /* für ältere Browser zur Zentrierung */
   
}

header {
    background-image: url(../images/header/headerbild.jpg);
    background-repeat: no-repeat;
    height: 150px;
    width: 900px;
    margin: 0 auto;
    
    
}

header p {
    text-align: right;
    padding-right: 20px;
}

#logotext {
    margin-top: 30px;
    font-size: 40pt;
    color: white;
}



#logotext2 {
    color: white;
    font-size: 30pt;
}


#steuerungoben {
    background-image: url(../images/header/grau-50.png);
    height: 25px;
    zoom:1;             /* für ältere IE */
}

#steuerungoben ul {
    list-style: none;
}

#steuerungoben li {
    display: inline-block;
}

#steuerungoben a:hover {
    background-image: url(../images/header/grau-50.png);
}

#steuerungoben a {
    display: inline-block;
    width: 230px;
    float: left;
    text-align: center;
    line-height: 24px;
    color: white;
    font-size: 20px;
    text-decoration: none ;
}

#steuerunglinks {
    width: 220px;
    float: left;
}

#steuerunglinks ul {
    margin-top: 0.9em;
}

#steuerunglinks li {
    list-style: none;
    font-size: 20px;
    padding-left: 10px;
    padding-bottom: 0.5em;
}

#steuerunglinks_1 {
    display: none;
}

aside {
    width: 175px;
    float: right;
    font-weight: bold;
    color: black;

}

aside h3 {
    color: #25AD9F;
    padding-top: 1.5em;
    padding-bottom: 1.5em;
   text-align: center;
}

aside ul {
    list-style-type: none;
    padding-left: 1em;
}

#asideunten {
    display: none;
}

section {
    margin-left: 250px;
    margin-right: 195px;
    font-family: sans-serif;
}

section h1 {
    padding-top: 35px; /* 25px */
    padding-bottom: 0.4em;
    color: #25AD9F;
}

section h2 {
    color: #25AD9F;
    padding-top: 1em;
    padding-bottom: 0.4em;
}

section h3  {
    color: #25AD9F;
    padding-top: 1em;
    padding-bottom: 0.4em;
}

section p {
    padding-bottom: 0.1em;
}

#video {
    margin-right: 10px;
    border-radius: 25px;
    width: 300px;
    height: 190px;
    background-color: silver;
    box-shadow: 10px 10px 5px 0px rgba(0,0,0,0.75)
}

iframe {
    margin-left: 10px;
    margin-top: 20px;
}



footer {
        background-image: url(../images/header/grau-50.png);
        height: 25px;
        color: white;
        text-align: center;
        margin-top: 25px;
}

 .slicknav_menu {
            display: none;
        }

 /* Für Tablet-PC */

    @media only screen and (max-width: 56.25em) {
   
   section {
        width: 62%;
        
    }
    
    #steuerungoben {
        display: none;
    }
    
    #steuerunglinks_1 {
        display: block;
    }
    


#wrapper, header {
    width: 100%;
}

#wrapper {
    background-image: url(../images/background/hintergrund-inhalt-2.png);
}

aside {
   display: none;
}

#asideunten  {
    display: block;
    float: none;
    clear: both;
    margin-left: 245px;
    width: 430px;
    color: black;
}

#asideunten h3 {
    text-align: left;
}

 .slicknav_menu {
            display: none;
        }

}   

 /* Für Handy und Co */
 
 @media only screen and (max-width: 45em){
        section {
            background-color: hsla(0,50%, 100%, 0.3);
            float: none;
            width: 90%;
            margin: 0 auto;
        }
        
         #asideunten {
            margin: 0 auto; 
         }
        
        #steuerungoben,
        #steuerunglinks {
            display: none;
        }
        
        .slicknav_menu {
            display: block;
        }
        
        .slicknav_nav a{
            text-align: left;
        }
        
  
        
        #logotext {
            padding-top: 15px;
        }
        
        #wrapper,
        #header {
            width: 100%;
        }
        
        #wrapper {
            background-image: none;
            background-color: hsla(0, 50%, 100%, 0.7);
        }
        
       
        
      
 }



#steuerunglinks a:link {
    padding-left:5px;
    -webkit-transition: all 2s ease-in-out;
    transition: all 2s ease-in-out;
}

#steuerunglinks a:hover {
    padding-left:20px;
    font-weight: bold;
    font-size: 25px;
    color:#ff0000;
    border-left: 5px dotted #ff0000;