Make joomla website cross compatible and fix 2 small issues

Hi, I am using Joomla Helix 2 Template with BT Background slideshow. The issues to be fixed are as follows. 1- Make website cross compatible with all major browsers. At the moment, there is a white banner on the top of the screen in IE Explorer as can be seen from the attachment called "Internet Explorer View". It should look like in the file called "Chrome view". 2- a- When window is in a small size, it is not responsive as it should be. The template itself is responsive but a custom css file has been created to display the 4 boxes and the text on top right which seems to be not responsive. When window is small, the two boxes on the right get larger and the text on above right is disappearing. b- Also when scrolling up and down, footer is not scrolling together with the boxes so footer is staying on top of boxes in small window 3- Take out the lines above and below the heading. These are visible when pages other than home accessed. Attached reference file is called lines above and below the heading. To make sure you have read and understood the requirements, pls start your message with "Affirmative" so that I know you are not one of the generic repliers who are jumping on all posts. We will have alot more work to come if satisfied, which I will tell you when we discuss one on one. Also let me know how many HOURS you need to complete the job. Thx