.venobox{
   z-index: 10;
    display: block;
}

.video{
   z-index: 10; 
}

.video-background{
    position: absolute;
    z-index: 0;
    display: block;
    width: 100%;
    height: 100%;
}

.video-background video{
  position: absolute;
  top: 0;
  left: 0;
  display: block;
  width: 100%;
  height: 100%;
  -o-object-fit: cover;
     object-fit: cover;
}

 .dark-overlay:before{
    z-index: 1;
}

.wrapper-title-hero {
    z-index: 2;
    position: relative;
}
.contech .title-hero {
    position: relative;
}