dojox/treemap/themes/GroupLabel.css

Dojo eXtensions, a rollup of many useful sub-projects and varying states of maturity – from very stable and robust, to alpha and experimental. See individual projects contain README files for details.

.dojoxTreeMapLeaf {
	border: none;
}

.dojoxTreeMapGroupContent_0 {
	border: 1px solid black;
}