1 Pixel gap in grid row

Hello,

I am using a grid row to show 4 product categories: this grid row is divided into 4 equal parts, which contain a picture with some text. The same setup as in the Enfold Shop demo. The problem is, the fourth picture appears to be one pixel shorter than the other pictures, so there is a gap between the picture and the color section beneath it which looks kinda bad. I first thought I did something wrong, but I noticed the same on the Enfold Shop demo itself. Does anyone know how to fix this? I’ve added a screenshot below, in which the third and fourth picture and setup are exactly the same.

I was also wondering about the possibility of adding one of those scroll down arrows to the Fullwidth Easy Slider. Is this possible with the Fullwidth Slider, or only with the Fullscreen Slider?

Thanks in advance,

Tom