DIV{
  background: RED;
  height: 500PX;
  width: 300PX;
  border: 10px solid blue;
  margin: 50px 10px;
  padding: 30px;
}
.hoja1{
  background:yellow;
  text-align: center;
  line-height: 150px;
}
.hoja2{
  height: 150px;
  width: 150px;
}
.hoja3{
  background: green;
  float: right;
}
p a{color: black;}