<div class="col-12 col-sm-4" style="height:100px;">
	<button onclick="setColor4('button4')" type="button" id="button4" class="btn btn-dark btn-block" style="height:80px;" data-toggle="collapse" data-target="#collapsePCB" aria-expanded="false" aria-controls="collapseServices">
		PCB Consideration
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</div>