Update button-input-button.html

Author: scottaohara

tests/button-input-button.html

@@ -49,9 +49,10 @@ <h1>ARIA in HTML - test case for additional role allowances for <code>button</co
 	</header>
 	<main>
 		<h2>Tests:</h2>
-		<p>
+		
+		<h3>
 			Authors MAY use <code>role=gridcell</code>, <code>slider</code> or <code>treeitem</code> on a <code>button</code> element.
-		</p>
+		</h3>
 
 		<div class="flex">
 			<div class="widgetDemo">
@@ -87,10 +88,10 @@ <h2>Tests:</h2>
 				</p>
 			</div>
 		</div>
-	<hr>
-		<p>
+	
+		<h3>
     		Authors MAY use <code>role=gridcell</code>, <code>slider</code> or <code>treeitem</code> on a <code>input type=button</code> element.
-    	</p>
+    	</h3>
     	<p>
     		Note that while these roles are allowed, web authors will generally have a much easier time building these components using another HTML 
     		element as their base (e.g., a button or even a div).