body {
  background-color: black;
}
dialog {
  background-color: black;
}
iframe {
  width: 100%;
}
.container {
  display: flex;
  flex-direction: row;
  justify-content: center;
  margin: 1rem;
}
.logo {
  width: 150px;
  margin: auto
}
.hidden {
  display: none;
}
.gif {
  width: 100%;
}