fixed position for custom CSS ID

Hi

I am trying to fix a 1/2 AVia layout builder content element which I have placed or right side of the page, I have assigned this element with custom class “kmsr01” and trying to fix its position and added following quick CSS:
#kmsr01 .container {
position: fixed !important;
top:5;
}

However, when displaying the page, I can still see when scrolling down the page (left side of page consists of longer column, so you need to scroll down to see it) that the right side is not fixed.

Thanks for advice
Martin