* On mobile when the main section spans the entire width of the viewport, remove the left/right and bottom borders. * On mobile when an expanded sidebar overlays the main content below * add a right border to the sidebar to differentiate it from the main content * add a right shadow (as a default style, not just in HC) - use `var(--pf-t--global--box-shadow--md--right)` * For sticky-top/bottom and shadow-top/bottom sections, add HC borders
var(--pf-t--global--box-shadow--md--right)