#Spalte_ueberschrift {
   width: 450px;
   vertical-align:top;
  }
#Spalte_kapitel {
   width: 450px;
   vertical-align:top;
  }
#Spalte_navigation {
   width: 200px;
   vertical-align:top;
    
   
  }
#Spalte_text {
   width: 750px;
   vertical-align:top;
   border:medium solid gray;
   padding:50px;
   vertical-align:top;
 
  }
  #Spalte_rechts {
      width: 50px;
      vertical-align:top;
     text-align:right;
  }
    
#buch_text {
  font-size:16px;
   }
   #text_einruecken {
      margin-left:50px;
      
  }
  #buch_ueberschriften {
  font-size:25px;
  font-weight:bold; 
  }

#Spalte_pfeil_links {
      width: 500px;
  }
  
#Spalte_pfeil_rechts {
      width: 500px;
      text-align:right;
  }
#links	{  vertical-align:top;
width: 300px;
		}
#mitte	{  vertical-align:top;
width: 400px;
		}
#rechts	{  vertical-align:top;
width: 250px;
		}
#kombinationen_links	{  vertical-align:top;
width: 100px;
		}
#kombinationen_rechts	{  vertical-align:top;
width: 400px;