How do I center the headline and sub-headline on front page?

I am using he custom front page in the Responsive theme by CyberChimps. I need help with the CSS to center the front page headline, sub-headline, and “Call to Action” button. I was able to remove the featured image using this code:

#featured-image {
	display: none;
}

Have not been able to find a solution in the support forum. I have create a child theme so I can edit CSS. Any help would be most appreciated. Site is not yet published.