I can fix it as I know the cause of the problem. I'm a web developer located in Canada and an expert in Wordpress, Magento and HTML/CSS. I have had experience working with HTML/CSS in all aspects during my life time of web development. I'll ensure efficient coding up to computer science algorithm standards.
I've recently developed Magento extensions (CSV product export for frontend customers, order fees, lowstock product alert, new product alert, Magento API access for dropship customers), developed magento themes, installed and upgraded Magento from 1.9.1.1 to 1.9.2.4 for a client (NOT on upwork site).
I helped a lot of clients with website need from simple CSS HTML bug fixes to full plug-in module development. I'll finish all the changes required by you smoothly without a hitch and specifically tailored to your requirements as I've done it in past jobs. I have experience in Zencart, Wordpress, Joomla, Prestashop, Magento, etc and I am an expert. I can start right now and finish the job quickly. I'm an expert in WordPress, Zencart, Magento and Joomla site all aspects including MySQL, custom modules, theme templates, customized HTML pages.