Go for Google friendly website design for your business
The website design can be something as easy as the slider works on the job and the image stays or hardens back to your website as it is and can be readable now. People used to know how to use Internet Explorer or Google Chrome when using Firefox or Firefox in a professional website design firm that can produce all the different browsers and devices that are expected to use it.
Make sure that the designer provides websites that can be browsed from anywhere on your website to make and compatible and mobile feedback can be viewed on any device. See also your support policy for your site.