.hero {
  position: relative;
  height: 100vh;
  background: url('https://images.unsplash.com/photo-1548842609-b6360c495e86?q=80&w=2000&auto=format&fit=crop')
    center/cover no-repeat;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: rgba(18,20,24,.6);
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 800px;
  padding: 0 20px;
}

.hero h1 {
  font-size: 84px;
  line-height: 1.1;
}

.hero-sub {
  margin-top: 24px;
  font-size: 18px;
  color: rgba(255,255,255,.9);
}

@media (max-width: 768px) {
  .hero h1 {
    font-size: 36px;
  }
}