/* generic style */
div.tile {
  position: absolute;
  background: trasparent;
}

/* box One */
.a {
  margin: 10px 0px 0px 35px;
} 
.b {
  top: 0em;
  left: 0em;
    z-index:3;
}
.c {
 margin: 25px 0px 0px 0px;
 z-index:3;
} 
/* box Four */
.d {
	margin-top: -40px;
    z-index: 1;
} 

/* box Five */
.e {
  margin: 175px 0px 0px 146px;
  z-index: 1;
}