body {
        background-color: rgb(0,64,64);
        color: rgb(200,200,200);
   }

   .mybox{ 
        border: 2px solid rgb(200,200,200);
        border-radius: 10px;
       /* background-color: rgb(0,0,64);*/
        margin: 50px;
        padding: 10px; 
    }
    
  
    .activeBox:hover{
       background: rgb(0,0,0);
       cursor: pointer;
    }

    .hideable:hover{
       cursor: default; /*We must override the behavior of .avtiveBox parent*/
    }

    a{
       color: yellow;
    }

    a:visited{
       color: orange;
    }

    a:hover{
       color: rgb(0,256,0);
    }
 
    .hiddenbox{ 
       display: none;  
    }