h1 {
  background: floralwhite;
  color: darkgreen;
  border: 40px floralwhite;
  border-radius: 10px;
  margin-left: auto;
  margin-right: auto;
  text-align: center;
  display: block;
  max-width: 50%;
}

container {
  display: flexbox;
  flex-direction: row;
  background-color: floralwhite;
  border: 40px floralwhite;
  border-radius: 10px;
}