Fix design of ecommerce site and make responsive design

Thank you for taking the time to help me with a few things. There are a few bugs and additions to be made on the website www.coveritup.in. As follows: 1. Main Menu bar issue - Not responsive in few resolutions. Attaching screenshot of the issue i found. This started happening when we added many icons on the mega menu while adding new products. Right now, We plan to add 2 more icons. Because of which even search button doesn't work at few resolutions. Check image no. 1. 2. Mega Menu issue- Under phone case, Many models added now as a result page has reached till the bottom. Mega menu has to be fixed in a way where new models are added, and at the same time page doesn't go till the bottom. We tried reducing font size but anything smaller than this, Will look really bad. And at the time, don't know if scroll in the mega menu, Will affect the UI too. 3. Main Banner getting cut- Banner always gets cut on browsers. Check the difference on safari and chrome for instance. Especially google chrome. Some users using diff resolutions have complained banner getting cut upto 25%. Either lets reduce the banner size and fix it or use original resolution and fix it. 4. Customisation page - Issue while uploading. Many customers have complained. This was fixed 3 months back. But some phones still have this issue. While some don't. Check image 4. Ok and 4. Not ok to see the difference. Notice that the image seems blurred. This can be seen for MI4i design your product. When you click apply, it seems to be become proper. 5. Mega Menu images issue - While adding images to mega menu. I can notice a lag and a delay. 6. Product selection page - Product name issue - Ideally i want the entire name to be shown. But that did not happen, So we decided to show only first 15-20 letters or so. This was done keeping in mind it looks ok on phone too (responsive). But, the line is breaking in-between and not in spaces, That makes the page looks bad. Check image 6. 7. On mobile phone, latest goods section of website works on second link. It needs to work on the first click. 8. Would like to know if the entire website is responsive or not and testing is required to be sure of that. Do let me know the timeline, possibility, fee and your assurance if it can be done by you. Thanks and regards