.sticky {
  position: -webkit-sticky;
  position: -moz-sticky;
  position: -ms-sticky;
  position: -o-sticky;
  position: sticky;
}

.sticky.sticky-fixed.is-sticky {
  position: fixed;
  -webkit-backface-visibility: hidden;
          backface-visibility: hidden;
}

.sticky.sticky-fixed.is-absolute{
  position: absolute;
}