html, body {
  height: 100%;
  margin: 0;
}

.hero {
  background-image: url('../img/blue.jpg');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.25);
}

.overlay {
  position: relative;
  text-align: center;
  color: white;
  padding: 20px;
}

.title {
  font-size: clamp(2rem, 5vw, 4rem);
  margin: 0;
}

.subtitle {
  font-size: clamp(1rem, 2.5vw, 1.5rem);
  margin-top: 10px;
}