div{background-color:red;
  height:500px;
  width:300px;
  border:10px solid blue;
  margin:50px 10px;
  padding:30px;
}

.hoja1{
  background-color:yellow;
  text-align:center;
  line-height:250px;
}
.hoja2{
  height:150px;
  width:150px;
}
.hoja3{
  background:green;
  float:right;
}