<div class="section first"></div>
<div class="section second"></div>
<div class="section third"></div>
<div class="section fourth"></div>

.section {
  height: 100vh;
  background-position: 0% 0%;
  background-size: cover;
  background-repeat: no-repeat;
  background-attachment: fixed;
}

.first {
  background-image: linear-gradient(
      180deg,
      rgba(0, 0, 0, 0.6) 0%,
      rgba(0, 0, 0, 0.3) 100%
    ),
    url(https://images.unsplash.com/photo-1617478755490-e21232a5eeaf?crop=entropy&cs=srgb&fm=jpg&ixid=MnwxNDU4OXwwfDF8cmFuZG9tfHx8fHx8fHx8MTYxNzU1NjM5NA&ixlib=rb-1.2.1&q=75&w=1920);
}

.second {
  background-image: linear-gradient(
      180deg,
      rgba(0, 0, 0, 0.6) 0%,
      rgba(0, 0, 0, 0.3) 100%
    ),
    url("https://images.unsplash.com/photo-1617128734662-66da6c1d3505?crop=entropy&cs=tinysrgb&fit=max&fm=jpg&ixid=MnwxNDU4OXwwfDF8cmFuZG9tfHx8fHx8fHx8MTYxNzc3NTM3MA&ixlib=rb-1.2.1&q=75&w=1920");
}

.third {
  background-image: linear-gradient(
      180deg,
      rgba(0, 0, 0, 0.6) 0%,
      rgba(0, 0, 0, 0.3) 100%
    ),
    url(https://images.unsplash.com/photo-1617438817509-70e91ad264a5?crop=entropy&cs=srgb&fm=jpg&ixid=MnwxNDU4OXwwfDF8cmFuZG9tfHx8fHx8fHx8MTYxNzU2MDk4Mg&ixlib=rb-1.2.1&q=75&w=1920);
}

.fourth {
  background-image: linear-gradient(
      180deg,
      rgba(0, 0, 0, 0.6) 0%,
      rgba(0, 0, 0, 0.3) 100%
    ),
    url(https://images.unsplash.com/photo-1617412327653-c29093585207?crop=entropy&cs=srgb&fm=jpg&ixid=MnwxNDU4OXwwfDF8cmFuZG9tfHx8fHx8fHx8MTYxNzU2MDgzMQ&ixlib=rb-1.2.1&q=75&w=1920);
}