The slider works but it is not visible, what's the problem?

Question

css

Here is the site v5.master-css.com/Grisha969/24/index.html# , there is a slider on a red background, it works but it is not visible

Answer 1

.fade {
   opacity: 0; 
  -webkit-transition: opacity .15s linear;
  -o-transition: opacity .15s linear;
  transition: opacity .15s linear;
}

remove this class and the slider is visible)

<div class="bl-slider">
   <div class="fade slick-initialized slick-slider">
          .....
   </div>
</div>

Answer 2

either the z-index is bad, or figure out why your divs in the slider have most of the styles crossed out (f12 and digging...)