<div class="wood">Wood<div class="marble">Marble<div class="water">Water</div></div></div>

In style element (<style type="text/css">) within head element:

body { 
  font-size: 18pt; 
  font-weight: bold; 
  color: white;
}
div.wood {
  padding: 1em;
  background-image: url('images/wood.jpg');
}
div.marble {
  background-image: url('images/marble.jpg');
  padding: 1em;
}
div.water {
  background-image: url('images/water.jpg');
  padding: 1em;
}