.my-nav{
    position: absolute;
    z-index: 10;
    width: 100%;
    }
    
    .carousel-item {
      height: 100vh;
      background: no-repeat center center scroll;
      -webkit-background-size: cover;
      -moz-background-size: cover;
      -o-background-size: cover;
      background-size: cover;
    }
    
    body{
      background-color: black;
    }