body {
    background-image: url('background.jpg');
    background-size: cover; /* Das Bild füllt den gesamten Hintergrund aus */
    background-position: center; /* Zentriert das Bild */
    background-repeat: no-repeat; /* Verhindert Wiederholung des Bildes */

}

.rahmen {border: solid black 2px;}

.content {
	margin-top: 130px;
	margin-left: 110px;
   	background-color: rgba(255, 255, 255, 0.8); 
	
}

.Navbar {
    position: fixed;
    width: 100%; 
    top: 20px;
}


.ui-navbar {
  list-style-type: none;
  margin: 0;
  padding: 0;
  overflow: hidden;
  background-color: #333;
}

.li-navbar {
  float: left;
}


.Sidebar_left { 
    position: fixed;
    top: 130px;		
    width: 600px; 
}

.ui-sidebar_left {
  list-style-type: none;
  margin: 0;
  padding: 0;
  overflow: hidden;
  background-color: #333;
  width: 15%;
}

li a {
  display: block;
  color: white;
  text-align: center;
  padding: 14px 16px;
  text-decoration: none;
}

li a:hover:not(.active) {
  background-color: #111;
}

.active {
  	background-color: lightyellow;
	color: black;
}