body {
  background-image: url("brick.png");
  background-repeat: repeat;
}

#poster {
  font-family: "Fira Sans", sans-serif;
  font-weight: 400;
  font-style: normal;
  margin: auto;
  width: 1200px;
  height: 1200px;
  display: grid;
  
  justify-items: center;
  background: url("paper.png");
  background-repeat: no-repeat;
}

img {
  width: 300px;
  height: 300px;
}