.clicker {
	outline:none;
	cursor:pointer;
}
button {
  width: 100%;
  text-align: left;
  border: 0px;
  margin: 4px;
  padding: 6px;
}

.hiddendiv{
	display:none;
	text-align: left;
	border: 0px;
	margin: 4px;
	padding: 6px;
	width: 98%;
}

.clicker:focus + .hiddendiv{
display:block;
}