.bannersec{
  position:relative;
  width:100%;
  padding-top:36%;
  overflow:hidden;
}
.slide{
  position:absolute;
  top:0;
  left:0;
  width:100%;
  height:100%;
  opacity:0;
  transition:opacity var(--fade,1s) ease-in-out;
}
.active{opacity:1;}
.slide img{
  width:100%;
  height:100%;
  object-fit:cover;
  display:block;
}
.dots{
  position:absolute;
  left:50%;
  transform:translateX(-50%);
  display:flex;
  gap:8px;
  z-index:20;       /* above slides */
  bottom:20px;      /* placed at bottom center of banner */
}
.dots span{
  width:12px;
  height:12px;
  border-radius:50%;
  background:#ddd;
  cursor:pointer;
  transition:0.3s;
  box-shadow:0 1px 2px rgba(0,0,0,0.15);
}
.dots .active-dot{
  background:#333;
}
@media (max-width: 600px) {
  .dots {
    display: none;
  }
}