body, html {
  margin: 0;
  padding: 0;
  height: 100%;
  background-color: black;
}

.hero {
  background: black url('../images/viking-bg.jpg') no-repeat center center / contain;
  height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
}

.hero h1 {
  margin: 0;
  font-size: 4em;
  color: #FFD700;
  font-family: 'Segoe UI', sans-serif;
  /* transparent background: no background */
}

.hero .subtitle {
  margin: 0.5em 0 0;
  font-size: 2em;
  color: #FFFFFF;
  font-family: 'Segoe UI', sans-serif;
}