.gitHubButton {
  position: fixed;
  top: 12px;
  right: 12px;
}

@media screen and (max-width: 900px) {
  .gitHubButton {
    position: absolute;
  }
}

@media screen and (max-width: 500px) {
  .gitHubButton {
    top: 8px;
    right: 8px;
  }
}