Grey lines below each section

Hi, I am using the new Parallax theme and I am getting grey lines at the bottom of each color box and grid box that has a white background. This seems to only be happening on the mobile side. I have tried the following css:

.main_color, .alternate_color {
border: none!important;
}
.avia-shadow {
box-shadow: none!important;
}

Screenshot: https://imgur.com/a/MOtoe9i
As you can see in the screenshot, the grey lines are still there. Can you tell me how to get rid of them please. Thank You

~ JP

• This topic was modified 10 months ago by IDS.