.splitter {
  display: -webkit-box;
  display: flex;
  flex-wrap: nowrap;
  -webkit-box-orient: horizontal;
  -webkit-box-direction: normal;
          flex-direction: row;
  -webkit-box-pack: justify;
          justify-content: space-between;
  position: relative;
}
.splitter.vertical {
  -webkit-box-orient: vertical;
  -webkit-box-direction: normal;
          flex-direction: column;
}
.splitter > .gutter {
  flex-shrink: 0;
  -webkit-box-flex: 0;
          flex-grow: 0;
  border: 1px solid #f8f8f8;
  background-color: #f8f8f8;
  cursor: col-resize;
  z-index: 1;
  position: relative;
  background-color: #bebebe;
}
.splitter > .gutter.active {
  background-color: #bebebe;
}
.splitter > .gutter::before {
  content: "";
  z-index: 1;
  display: block;
  position: absolute;
  left: 0;
  width: 100%;
  top: 50%;
  height: 24px;
  margin-top: -12px;
  background-color: #bebebe;
}
.splitter.vertical > .gutter {
  cursor: row-resize;
}
.splitter.vertical > .gutter::before {
  height: 100%;
  width: 24px;
  top: 0;
  left: 50%;
  margin-left: -12px;
  margin-top: 0;
}
.splitter > .split-block {
  position: relative;
  -webkit-box-flex: 1;
          flex-grow: 1;
  flex-basis: 0;
  overflow: hidden;
}