almende/vis

.vis-itemset {
  position: relative;
  padding: 0;
  margin: 0;

  box-sizing: border-box;
}

.vis-itemset .vis-background,
.vis-itemset .vis-foreground {
  position: absolute;
  width: 100%;
  height: 100%;
  overflow: visible;
}

.vis-axis {
  position: absolute;
  width: 100%;
  height: 0;
  left: 0;
  z-index: 1;
}

.vis-foreground .vis-group {
  position: relative;
  box-sizing: border-box;
  border-bottom: 1px solid #bfbfbf;
}

.vis-foreground .vis-group:last-child {
  border-bottom: none;
}

.vis-nesting-group {
  cursor: pointer;
}

.vis-nested-group {
  background: #f5f5f5;
}

.vis-label.vis-nesting-group.expanded:before {
  content: "\25BC";
}

.vis-label.vis-nesting-group.collapsed-rtl:before {
  content: "\25C0";
}

.vis-label.vis-nesting-group.collapsed:before {
  content: "\25B6";
}

.vis-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 10;
}