body {
  font-family: Arial, Helvetica, sans-serif;
}
#bg_grau {
	background: #C0C0C0;
	border-style: groove;
	}
#rcorners1 {
  border-radius: 25px;
  background: #DCFFA0;
  padding: 20px;
/*  width: 200px; */
/*  height: 150px;  */
  text-align: center;
}
#Desktopbild {
position:relative;
}
/* When the screen is less than 600 pixels wide, hide all links, except for the first one ("Home"). Show the link that contains should open and close the navbar (.icon) */

@media screen and (max-width: 3600px) {
  .navbar a:not(:first-child) {display: none;}
  .navbar.dropdown a:not(:first-child) {display: none;}
  .navbar a.icon {
    float: right;
    display: block;
  }
}

/* The "responsive" class is added to the navbar with JavaScript when the user clicks on the icon. This class makes the navbar look good on small screens (display the links vertically instead of horizontally) */

@media screen and (max-width: 3600px) {
  .navbar.responsive {position: relative;}

  .navbar.responsive a.icon {
    position: absolute;
    right: 0;
    top: 0;
  }
  .navbar.responsive a {
    float: none;
    display: block;
    text-align: left;
  }
}

.navbar {
  width: 150px;
  overflow: hidden;
/*  background-color: #333; */
  background-color:   #DCFFA0;
  font-family: Arial;
}

.navbar a {
  font-size: 16px;
/*  color: white; */
  color: #0000C0;
  display: block;
  padding: 12px;
  text-decoration: none;
}

.navbar a:hover {
  background-color: #ccc;
}

.navbar a.active {
  background-color: #04AA6D;
  color: white;
}

/* Hide the link that should open and close the navbar on small screens */
.navbar .icon {
  display: none;
}

.dropbtn {
  background-color: #04AA6D;
  color: white;
  padding: 16px;
  font-size: 16px;
  border: none;
}

.dropdown {
/*  float: left; */
  overflow: hidden;
  position: relative;
  background-color:   #DCFFA0;
  color: #0000C0;
}

.dropdown .dropbtn {
  font-size: 16px;
  border: none;
  outline: none;
  background-color:   #DCFFA0;
/*  color: white; */
  color: #0000C0;
  padding: 14px 16px;
/*  background-color: inherit; */
  font-family: inherit; /* Important for vertical align on mobile phones */
  margin: 0; /* Important for vertical align on mobile phones */
}

.dropdown-content {
  display: none;
  position: absolute;
/*  background-color: #f9f9f9; */
  background-color:   #DCFFA0;
/*  background-color: inherit; */
  color: #0000C0;
  min-width: 160px;
  box-shadow: 0px 8px 16px 0px rgba(0,0,0,0.2);
  z-index: 1;
}

/* Links inside the dropdown */
.dropdown-content a {
  float: none;
  color: #0000C0;
/*  color: black; */
  padding: 12px 16px;
  text-decoration: none;
  display: block;
  text-align: left;
}

/* Add a grey background color to dropdown links on hover */
.dropdown-content a:hover {
/*  background-color: #ddd; */
  color: #0000C0;
/*  background-color: red; */
/*  background-color: green; */

}

/* Show the dropdown menu on hover */
.dropdown:hover .dropdown-content {
  display: block;
}

.dropdown:hover .dropbtn {background-color: #3e8e41;}
<!-- <link rel="stylesheet" type="text/css" href="vertical_menu.css"> -->