@font-face {
  font-family: 'bohemiantypewrite';
  src: url('../css/fonts/bohemiantypewriter.eot');
  src: url('../css/fonts/bohemiantypewriter.eot?#iefix') format('embedded-opentype'),
       url('../css/fonts/bohemiantypewriter.woff2') format('woff2');
  font-weight: normal;
  font-style: normal;
}

body {
    background-color: none;
    background-repeat:repeat-x;
    text-align: justify;
    font-family: 'bohemiantypewrite', verdana, sans-serif;
    position:relative;
}

#header_bgr {
        background-color:#ffffff;
        min-width:1000px;
        width:1000px;
        position:absolute;
        margin-top:0px;
        width:100%;
        height:180px;
        margin-left:0px;
        -webkit-box-shadow: 0px 7px 7px 0px rgba(0,0,0,0.35);
        -moz-box-shadow: 0px 7px 7px 0px rgba(0,0,0,0.35);
        box-shadow: 0px 7px 7px 0px rgba(0,0,0,0.35);
        z-index: 1;
}

#center_bgr {
        background-color:#919191;
        position:absolute;
        margin-top:180px;
        width:100%;
        height:471px;
        z-index: 0;
}

#zentrierung {
    margin:0 auto;
    min-width:1000px;
    width:1000px;
    left:20%;
    right: -20%;
    background-color: #919191;
    background-repeat:repeat-y;
}

#header {
        background-color: none;
        position:relative;
        margin-top:0px;
        height:190px;
        width:1000px;
        border-style:none;
        z-index: 10;
}

#header-menue_1 {
        background-color: #ffffff;
        position:absolute;
        top:40px;
        left:642px;
        margin:0px;
        height:83px;
        width:333px;
        z-index: 10;
}

#header-dropdown {
        background-color: none;
        position:absolute;
        top:139px;
        left:10px;
        height:40px;
        z-index: 10;
}

<!-- DROPDOWNMENÜ -->

.navbar {
  overflow: hidden;
  background-color: #59addc;
  font-family: 'bohemiantypewrite', verdana, sans-serif;
}

.navbar a {
  float: left;
  font-size: 18px;
  color: white;
  text-align: center;
  padding: 10px 15px;
  text-decoration: none;
}

.dropdown {
  float: left;
  overflow: hidden;
}

.dropdown .dropbtn {
  cursor: pointer;
  font-size: 18px;
  border: none;
  outline: none;
  color: #000000;
  padding: 10px 15px;
  background-color: #ffffff;
  font-family: 'bohemiantypewrite', verdana, sans-serif;
  margin: 0;
}

.navbar a:hover, .dropdown:hover .dropbtn, .dropbtn:focus {
  background-color: #f5f5f5;
}

.dropdown-content {
  display: none;
  position: absolute;
  background-color: #ffffff;
  min-width: 160px;
  -webkit-box-shadow: 0px 0px 20px 0px rgba(0,0,0,0.6);
  -moz-box-shadow: 0px 0px 20px 0px rgba(0,0,0,0.6);
  box-shadow: 0px 0px 20px 0px rgba(0,0,0,0.6);
  z-index: 50;
}

.dropdown-content a {
  float: none;
  color: black;
  padding: 12px 16px;
  text-decoration: none;
  display: block;
  text-align: left;
}

.dropdown-content a:hover {
  background-color: #f5f5f5;
}

.show {
  display: block;
}

<!-- DROPDOWNMENÜ -->

#center {
        background-color:none;
        position:relative;
        width:980px;
        margin-bottom:0px;
        margin-left:10px;
}

#inhalt_1 {
        position:relative;
        top:0px;
        left:5px;
        width:740px;
        float:left;
        background-color:none;
        padding:10px;
        z-index:0;
}

#inhalt_home {
        position:relative;
        top:0px;
        left:10px;
        width:970px;
        float:left;
        background-color:none;
        padding:0px;
        z-index:0;
}

#slideshow {
        margin-left:0px;
        margin-top:0px;
        width:740px;
        height:416px;
}

#slideshow_home {
        margin-left:0px;
        margin-top:0px;
        width:970px;
        height:450px;
}

#inhalt_2 {
        position:relative;
        margin-left:760px;
        width:200px;
        height:441px;
        background-color:none;
        padding:10px;
        z-index:0;
}

#inhalt_2_ohnehoehe {
        position:relative;
        margin-left:760px;
        width:200px;
        background-color:none;
        padding:10px;
        z-index:0;
}

#bottom {
        background-color:#ffffff;
        position:relative;;
        padding:20px;
        width:960px;
        margin-left:0px;
        margin-top:0px;
}

#shadow_small {
  -webkit-box-shadow: 3px 3px 3px 0px rgba(0,0,0,0.25);
  -moz-box-shadow: 3px 3px 3px 0px rgba(0,0,0,0.25);
  box-shadow: 3px 3px 3px 0px rgba(0,0,0,0.25);
}

#shadow_middle {
  -webkit-box-shadow: 5px 5px 5px 0px rgba(0,0,0,0.30);
  -moz-box-shadow: 5px 5px 5px 0px rgba(0,0,0,0.30);
  box-shadow: 5px 5px 5px 0px rgba(0,0,0,0.30);
}

#shadow_big {
  -webkit-box-shadow: 7px 7px 7px 0px rgba(0,0,0,0.35);
  -moz-box-shadow: 7px 7px 7px 0px rgba(0,0,0,0.35);
  box-shadow: 7px 7px 7px 0px rgba(0,0,0,0.35);
}

.img-circle {
      border-radius: 12px;
}

.imagedropshadow {
    padding: 0px;
    border: none;
}

a:hover img.imagedropshadow {
  -webkit-box-shadow: 3px 3px 5px 3px rgba(0,0,0,0.25);
  -moz-box-shadow: 3px 3px 5px 3px rgba(0,0,0,0.25);
  box-shadow: 3px 3px 5px 3px rgba(0,0,0,0.25);
}

<!--
A:link {font-weight : normal; color : #000000; text-decoration : none;}
A:visited {font-weight : normal; color : #000000; text-decoration : none;}
A:hover {font-weight : normal; color : #59addc; text-decoration : none;}
B {font-weight : normal; color : #919191; text-decoration : none;}
STRONG {font-weight : normal; color : #2f2f2f; text-decoration : none;}
-->