*{
  margin:0;
  padding:0;
  box-sizing:border-box;
}

body{
  background:#000;
}

.hero{
  position:relative;
  height:100vh;
  background:url('logo.png') center/cover no-repeat;
}

.overlay{
  position:absolute;
  width:100%;
  height:100%;
  background:rgba(0,0,0,0.4);
}