.Ampel-Rot{
            width:20px;
            height:20px;
            background-color:red;  
        }
        
        .Ampel-Gelb{ 
            width:20px;
            height:20px;
            background-color:yellow;  
        }
        
        .Ampel-Gruen{
            width:20px;
            height:20px;
            background-color:greenyellow; 
        }