.slideout-menu {
    position: fixed;
    top: 0;
    bottom: 0;
    z-index: 0;
    width: 256px;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    display: none;
}

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

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

.slideout-panel {
position: absolute;
height: 100%;
width: 100%;
z-index: 1;
}

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

.slideout-menu-left.slideout-open-left, 
.slideout-menu-right.slideout-open-right {
display: block;
}