Hi, I have gone through your provided job proposal and assure that i am expertise in open cart. i will do all the modifications/changes as per your requirements and also fix the responsiveness.
Relevant Skills and Experience
CSS, HTML, Open Cart, PHP, Website Design, eCommerce, PSD, wordpress, jquery, javascript, bootstrap, etc.
Proposed Milestones
$350 AUD - Opencart modification
Can you share the URL by chat.