mini_cocopi/blockly/core/draft.css

#\:1 > .blocklyTreeRow > .blocklyTreeIconClosedLtr,
#\:a > .blocklyTreeRow > .blocklyTreeIconClosedLtr,
#\:s > .blocklyTreeRow > .blocklyTreeIconClosedLtr {
	background-image: url(<<<PATH>>>/sprites.png);
	height: 18px;
	vertical-align: middle;
	width: 18px;
	background-size: 100% 100%;
	background-repeat: no-repeat;
}

#\:1 > .blocklyTreeRow > .blocklyTreeIconOpen,
#\:a > .blocklyTreeRow > .blocklyTreeIconOpen,
#\:s > .blocklyTreeRow > .blocklyTreeIconOpen {
	background-image: url(<<<PATH>>>/expand_open.png);
	height: 18px;
	vertical-align: middle;
	width: 18px;
	background-size: 100% 100%;
	background-repeat: no-repeat;
}