div { position:relative; height:135px; margin:10px; padding-top:0; 
      border:2px solid black; }
p   { padding:5px; background-color:gold; text-align:center;
      border-left:1px solid gray; border-right:2px solid black; 
      border-top:1px solid gray; border-bottom:2px solid black; }

#cm { position:absolute; }

*.hc { width:200px;  left:0;  margin-left:auto;  right:0;   margin-right:auto;  }

*.vc { height:40px;  top:0;   margin-top:auto;   bottom:0;  margin-bottom:auto; }