<zk>
<style>
.blue {
	border: solid 1px blue;
}
.red {
	border: solid 1px red;
}
.green {
	border: solid 1px green;
}
.black {
	border: solid 1px black;
}
</style>
Please click the button "add newChild" and the size fo black area inside blue area should be up to date
<hlayout id="container" width="580">
	<div  hflex="1">
	<div class="blue">
	<div class="black" hflex="1">
	blue
	</div>
	</div>
	</div>
	<div class="red" hflex="1">
	red
	</div>
	<div class="green" hflex="1">
	green
	</div>
</hlayout>
<button label="add newChild">
	<attribute name="onClick">
	
	container.appendChild(container.getLastChild().clone());
	</attribute>
</button>
</zk>