body {
  margin: auto;
  color: #1A1A1A;
}

.subpage {
  height: 400px;
  justify-content: center;
  color: #0092CD;
  background-image: url("https://www.aprocle.com/ivyletnik/img/vlak_dlouha_expozice.jpg");
  background-position: center;
  background-size: cover;
  background-repeat: no-repeat;
  margin-bottom: 50px;
}

.page {
  width: 80%;
  margin: 150px auto;
}