Integrate JQuery slider into existing webpage - (To be done on localhost via TeamViewer).

Hello all! So I am working on a webpage locally and I have used a 'Nivo Slider' but I am struggling to make this responsive enough. I have been using '@media screen' CSS to specify sizes of the slider during different screen sizes. HOWEVER, I have not considered that there will be varying image sizes that will be uploaded to the site by the users. Therefore, the slider needs to be flexible for both varying image sizes AND varying screen sizes. My modification of the Nivo Slider with CSS has caused some overlapping (Nivo Slider sits on a background which has caused concerns for me and others on forums too!). This webpage uses PHP includes for the meta, header, footer and js. You can EITHER: a) Implement 'FlexSlider 2' which I have downloaded and ready to go. I really like how responsive this is but failed to implement it nicely onto the webpage OR b) Make changes in CSS to make my current slider responsive to image and screen size variations. We will need to do this via TeamViewer (in my localhost). More details will be given to the winning bidder! NOTE: This should be a quick job for a skilled person and I will have more work coming up. I need a go-to person to help with some of my upcoming work that will be overflow (Web Development)