OverlayScrollbars/packages/overlayscrollbars/tests/browser/lifecycles/structureLifecycle/index.scss

body {
  display: flex;
  flex-direction: column;
}
#controls {
  flex: none;
}
#stage {
  flex: auto;
  position: relative;

  & > div {
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    background: lightgoldenrodyellow;
  }
}

#canvas > div {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
}

.columns {
  display: flex;
  width: 100%;
  height: 100%;
}

.column {
  width: 100%;
  height: 100%;
  font-size: 0;
  line-height: 0;
}

.env {
  background: rgba(0, 0, 0, 0.1);
}

#target,
#comparison {
  position: relative;

  .os-viewport::before,
  &::before {
    content: '';
    display: block;
    position: absolute;
    border: 2px dotted red;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    z-index: 2;
    pointer-events: none;
  }

  * {
    font-size: medium;
    line-height: normal;
  }
}

#target::before {
  opacity: 0.3;
}

#comparison {
  overflow: hidden;
  z-index: 0;
}

.resize {
  overflow: hidden;
  background: blue;
  border: 1px solid black;
  padding: 10px;
}

.percent {
  height: 50%;
  background: purple;
  border: 1px solid black;
  padding: 10px;
}

.end {
  position: relative;
  background: green;
  border: 1px solid black;
  padding: 10px;
  margin: 10px;
}

.end::before {
  content: '';
  position: absolute;
  display: block;
  top: -11px;
  right: -11px;
  bottom: -11px;
  left: -11px;
  background: green;
  z-index: -1;
  opacity: 0.5;
}

.resizer {
  position: relative;
}

.resizeBtn {
  position: absolute;
  bottom: 0;
  right: 0;
  height: 20px;
  width: 20px;
  background: red;
  opacity: 0.3;
}

.widthAuto,
.envWidthAuto {
  width: auto;
  display: inline-block;
}
#target.widthAuto {
  display: inline-flex;
}
.widthHundred,
.envWidthHundred {
  width: 100%;
}

.heightAuto,
.envHeightAuto {
  height: auto;
}
.heightHundred,
.envHeightHundred {
  height: 100%;
}

.width200 {
  width: 200px;
}
.height200 {
  height: 200px;
}

.floatNone {
  float: none;
}

.floatLeft {
  float: left;
}

.floatRight {
  float: right;
}

.paddingNone {
  padding: 0;
}

.paddingSmall {
  padding: 5px 50px 15px 20px;
}

.paddingLarge {
  padding: 12px 22px 53px 33px;
}

.borderNone {
  border: none;
}

.borderSmall {
  border-color: darkorange;
  border-style: solid;
  border-width: 2px 5px 3px 4px;
}

.borderLarge {
  border-color: darkorange;
  border-style: solid;
  border-width: 9px 6px 7px 3px;
}

.marginNone {
  margin: 0;
}

.marginSmall {
  margin: 21px 16px 4px 33px;
}

.marginLarge {
  margin: 33px 46px 69px 23px;
}

.boxSizingBorderBox {
  box-sizing: border-box;
}

.boxSizingContentBox {
  box-sizing: content-box;
}

.directionLTR {
  direction: ltr;
}

.directionRTL {
  direction: rtl;
}

.minMaxFixed {
  min-height: 180px;
  min-width: 180px;
  max-height: 420px;
  max-width: 420px;
}

.minMaxNone {
  min-height: 0;
  min-width: 0;
  max-height: none;
  max-width: none;
}

/*
.os-environment::-webkit-scrollbar,
.os-viewport::-webkit-scrollbar,
.os-environment::-webkit-scrollbar-corner,
.os-viewport::-webkit-scrollbar-corner {
  display: none !important;
  width: 0px !important;
  height: 0px !important;
  visibility: hidden !important;
  background: transparent !important;
}

div::-webkit-scrollbar:horizontal {
  display: none !important;
  width: 0px !important;
  height: 0px !important;
  visibility: hidden !important;
  background: transparent !important;
}
div::-webkit-scrollbar:vertical {
  display: block !important;
  width: 10px !important;
  height: 10px !important;
  background: red;
}

::-webkit-scrollbar-track {
  background: red;
}

::-webkit-scrollbar-thumb {
  background: green;
}
*/