Easy way to create text strapline and long search box like Vouchercodes.co.uk

I would really like to copy the centred main heading, sub heading and wide search box design that is in use on sites like Vouchercodes.co.uk and Voucherbox.co.uk – this seems like a good standard to follow and is very neat and clean. Is there an easy way to achieve this? I’ve fiddled around with the widgets and can’t get it the way I want. Any help much appreciated. See attached for Vouchercodes.co.uk screenshot of what i’m trying to achieve.