I've spent days trying to figure this out. I've searched high and low on google and wordpress, but I haven't come across anyone who had a similar issue.
Theme: Hiero
Everything works fine on desktop and tablets, but when it comes to cell phones I have a small issue of my product's add to cart button on my shop page overlapping when viewing the website from a cell phone. However, when I view the website on the cell phone sideways instead of vertical, the problem goes away.
website: http://maidenvape.com
Problem page: http://maidenvape.com/shop/