#root {
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
}

.app {
  flex: 1 0 0%;
  height: 80vh;
  max-width: 800px;
  width: 98vw;
}

.app pre.language-jsx {
  padding: 0 1em;
}

.github-fork-ribbon:before,
.github-fork-ribbon:after {
  position: fixed;
}

.github-fork-ribbon:before {
  background-color: #373277;
}

#root {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
}

.app {
  flex: 1 0 0%;
  height: 80vh;
  max-width: 800px;
  width: 98vw;
}

.app pre.language-jsx {
  padding: 0 1em;
}

.github-fork-ribbon:before,
.github-fork-ribbon:after {
  position: fixed;
}

.github-fork-ribbon:before {
  background-color: #373277;
}

Remove height rule that breaks examples on Firefox
Remove height rule that breaks examples on Firefox