#gameContainer {
  width: 400px;
  height: auto;
  margin: 0 auto; /* Centers the container horizontally */
  display: none; /* Hides the container by default */
}
html, body {
    margin: 0;
    padding: 0;
    height: 100%;
}

/* #gameContainer { */
    /* position: absolute; */
    /* top: 0; */
    /* left: 0; */
    /* width: 100%; */
    /* height: 100%; */
/* } */

#gameIframe {
    width: 100%;
    height: 100%;
    border: none;
  /* display: none; /\* Hides the container by default *\/ */
  margin: 0 auto; /* Centers the container horizontally */
}