Fix responsiveness for home page and product page.

Dear Sir/Madam, I have a product page (namely [login to view URL]). Its checkout popup div is not keep in the centre of the page. I need to fix it so that the checkout popup div always keep in the centre of the page when the width of the browser is reduced. The checkout can be activated when the Add to Cart button is clicked. With the home page (namely [login to view URL]), its photos below the "9-ZONE Eco Healthy Mattress" is not responsive when the width of the browser reduced. Please add responsiveness to this . For the effective css, please modify your css code in the following file (download it first): <link rel="stylesheet" type="text/css" href="[login to view URL]">. This css file is written near the beginning of the home page. The new change for the responsiveness should be able to handle any size of the individual photo, because I will increase the height of the each photo (all same height) in my testing. There is some variation gaps between photos, this looks inconsistent (not aligned properly), please fix as well during your modification. Please note., When open this two files, there will be ssl certificate warnings. Please accept by simply clicking the link Proceed to the site. Because I recently setup a web proxy that use only one ssl certificate for another domain. But the css and photo links are linked to a different domain, therefore the warning message popup. But there is no harm at all. Your help is much appreciated. Thanks again.