Panels

Hello,

how to put a panel in responsive?

<div>
<section><?php print $content['widget-1']; ?></section>	
<section><?php print $content['widget-2']; ?></section>
<section><?php print $content['widget-3']; ?></section>
</div>
<div>
<section><?php print $content['widget-4']; ?></section>	
<section><?php print $content['widget-5']; ?></section>
<section><?php print $content['widget-6']; ?></section>
</div>