Mine

div.float {
  /*float:left;*/  
  display:table-cell; /* ########################### ADDED display:table-cell; */
  }
  
div.float p {
   text-align: center;
   }

 div.tt-ri {
   margin-left: auto;
   margin-right: auto;
 }
   
div.tt-r {
  border: 1px dashed #333;
  background-color: #ffc;
  white-space:nowrap;
  }

div.spacer {
  clear: both;
  }