body {
  display: flex;
  flex-direction: column;
  align-items: center;
  min-height: 100vh;
}
.container {
  height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  text-align: center;
}

.topbanner {
  font-size: 2rem;
  margin-bottom: 0;
}
.banner {
  margin-top: 0.1rem;
  font-size: 5rem;
}