.slideout-menu {
  position: fixed;
  top: 0;
  bottom: 0;
  width: 256px;
  min-height: 100vh;
  overflow-y: scroll;
  -webkit-overflow-scrolling: touch;
  z-index: 0;
  background-color: var(--red);
  display: none;
}

.slideout-menu-left {
  left: 0;
}

.slideout-menu-right {
  right: 0;
}

.slideout-panel {
  position: relative;
  z-index: 1;
  will-change: transform;
  background-color: #FFF; /* A background-color is required */
  min-height: 100vh;
  overflow: hidden;
}

.slideout-open,
.slideout-open body,
.slideout-open .slideout-panel {
  overflow: hidden;
}

.slideout-open .slideout-menu {
  display: block;
}

@media screen and (max-width: 991px) {
  .slideout-menu {
      /* -webkit-transition: all 0.3s linear; */
      -moz-transition: all 0.3s linear;
      -ms-transition: all 0.3s linear;
      -o-transition: all 0.3s linear;
      /* transition: all 0.3s linear; */
  }
}