.container {
  position: absolute;
  top: 30%;
  left: 50%;
  transform: translate(-50%, -30%);
  text-align: center;
  width: 90%;
}
.heading {
  margin: 30px 0;
}

@media screen and (max-width: 720px) {
  .heading {
    font-size: 28px;
  }
}