body {
  margin: 0;
  text-align: center;
}

.button {
  display: inline-block;
  vertical-align: top;
}

button {
  display: block;
  margin: 1em;
  width: 70px;
}

a {
  text-decoration: none;
}

iframe.desktop {
  /* display: block; */
  width: calc(100vw - 150px);
  height: 100vh;
  /* border: 2px groove #ebebeb; */
  /* margin: auto; */
}

iframe.mobile {
  /* display: block; */
  width: 414px;
  height: 896px;
  /* border: 1px solid #ebebeb; */
  margin: 0.5em;
  box-shadow: 0 4px 8px 0 rgba(0, 0, 0, 0.2), 0 6px 20px 0 rgba(0, 0, 0, 0.19);
}