* {
  margin: 0;
  padding: 0;
}
img {
  width: 100%;
}
.BluBG {
  background-color: blue;
  color: white;
  font-size: 35px;
}
.missing {
  background-color: red;
  font-size: 5vw;
}
.puppy-1 img,
.puppy-2 img {
  height: 100%;
}