body {
  margin: 0 auto;
  font-family: Roboto;
  background-color: #3B3F69;
}

.main-div {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  height: 100vh;
  width: 100vw;
  color: rgba(255, 255, 255, 0.87);
  font-size: 10rem;
  font-weight: 300;
}