Arrows next to Slider door on front page

Hi,
I have put 5 posts on the slider door instead of 4,
it works well until that part.
but if I add one more post, it goes to the next page
and the arrow is displayed, overlapping with the image,
so when I try to click the arrow, it clicks the image and links to the post

How can I make the arrow come apart further from the slider frame?
Which script do I have to edit?

Thanks a lot!