div            { margin:10px; padding-left:30px; background-color:gold;
                 background-image: url("ruler.gif"); background-repeat:repeat-y; }
*.border       { border:2px solid black; }

*.collapsed    { margin-top:20px;   margin-bottom:20px; }

*.uncollapsed1 { margin-top:0;      margin-bottom:0; 
                 padding-top:20px;  padding-bottom:20px; 
                 background-color:transparent; }

*.uncollapsed2 { margin-top:0;      margin-bottom:0; 
                 border-top:20px    solid transparent;  
                 border-bottom:20px solid transparent; }