@antv/x6-react-components/lib/split-box/style/index.css

React components for building x6 editors

.x6-split-box-vertical > .x6-split-box-resizer {
  width: 4px;
  margin: 0 -2px;
  background: transparent;
}
.x6-split-box-horizontal > .x6-split-box-resizer {
  height: 4px;
  margin: -2px;
  background: transparent;
}
.x6-split-box-disabled > .x6-split-box-resizer {
  cursor: default;
}