How can I modify my product page to span the full width of a mobile screen?

[DAGNORAK]

 

 

Here’s a website I want to replicate - I want product photos to span the width of the phone screen and also have no white space between the product photo and the header -

also how do I get the dots at the bottom of product images ? I’ve edited css to hide numbers as they don’t look good. 

thanks, website dagnorak.com