*.gp { position:relative; height:300px; width:700px; border:2px solid black;       }
*.ex1 { width:120px; padding:5px; text-align:center; border:1px dotted black;      }
*.ex2 { position:relative; border:5px solid black;  background-color:gold; left:0; }
*.ex1 span  { height:36px; left:0; width:130px;
        position:absolute; top:0; margin-top:auto; bottom:0; margin-bottom:auto;   }

#ia   { height:100px;  top:0; margin-top:auto; bottom:0; margin-bottom:auto; 
        position:absolute;    line-height:100px;                margin-left:40px;  }
#za   { height:100px;  top:0; margin-top:auto; bottom:0; margin-bottom:auto; 
        position:absolute;                                      margin-left:200px; }
#wa   { height:auto;   top:0; margin-top:90px; bottom:0; margin-bottom:90px; 
        position:absolute;                                      margin-left:355px; }
#sa   { height:auto;   top:0; margin-top:90px; bottom:0; margin-bottom:90px; 
        position:absolute;                                      margin-left:510px; }