.fb-embed {
    width: 1000px;
    height: 550px;
}

@media only screen and (max-width: 1200px) {
  .fb-embed {
      width: 800px;
      height: 450px;
  }
}

@media only screen and (max-width: 900px) {
  .fb-embed {
      width: 550px;
      height: 309px;
  }
}

@media only screen and (max-width: 600px) {
  .fb-embed {
      width: 400px;
      height: 225px;
  }
}

@media only screen and (max-width: 400px) {
  .fb-embed {
      width: 80%;
      height: 200px;
  }
}