body{
  margin: 1;
  padding: 0;
  font-size: 20px;
}
.mein{
  margin-top: 80px;
  margin-left: 65px;
  margin-right: 65px;
}
/* Navigation */
nav{
  float: right;
 overflow:hidden;
  text-align: center;
}

nav ul{
  margin: 0;

  padding: 0;
}

nav ul li{
  display: inline-block;
  list-style-type: none;
  margin-left: 10px;
  margin-right: 10px;
    
  }
  
nav > ul > li > a{
  color: black;
  display: block;
  line-height: 2em;

  text-decoration: none;
}



.logo-img{
  float: left;
  position: relative;
  margin: 10px 15px 15px 10px;
}
.bg-div{
 background:white;
 overflow: hidden;
}
nav > ul > li > a:hover{
  color: blue;
  display: block;
  line-height: 2em;

  text-decoration: none;
}
.prev{
font-size:40px;

}
.next{
  margin-left: 1100px;

font-size:40px;
}