body{
    background: #eee url(../images/img01.jpg) repeat-x fixed top;
    background-color: #ecebee;
 }

h1, h2, h3 h4, h5, h6, p {
    font-family:'Montserrat', Helvetica, Arial, sans-serif;
 }

 h6{
    font-weight: bold;
    text-decoration: underline;
 }

 h5{
     font-weight: bold;
 }

 .p_agb{
     font-size: 1.2rem;
 }

 .h3_agb{
     font-size: 0.4;
     margin-top: 3px;
 }

 
 .header_img{
     width: 330px;
    }

 /*-----------------------------------------------------   
     Tabletversion ab 640 Pixel                          
       640px / 16px/em = 40em  
------------------------------------------------------*/
@media screen and (min-width: 40em) {
.header_img{width: 450px; visibility: visible;}

}

/*------------------------------------------------------------------
    Bildschirme ab 1024 Pixel                         
      1024px / 16px/em = 64em	
 ------------------------------------------------------------------- */
 @media screen and (min-width: 64em) {
     .header_img{width: 650px;}

}	    
/*------------------------------------------------------------------- 
    Große Bildschirme (>1280 Pixel) 
      1280px / 16px/em = 80em
  -------------------------------------------------------------------- */
@media screen and (min-width: 80em) {
    .header_img{width: 750px;}

}