body{
  background-image: url(images/checkerboard.png);
  background-size: 40px;
  background-position: center;
  }

iframe {
  border: none;
  display: block;
  margin-left: auto;
  margin-right: auto;
  width: 509px;
}

div {
  border-radius: 50px;
  padding: 10px;
  display: block;
  margin-left: auto;
  margin-right: auto;
  width: 1000px;
  height: 1000px;
  background-color: rgba(0, 0, 0, 0.5);
  text-align: center;
  color: white;
  font-family: "gluten";
}

p {
  color: white;
}