border-bottom not aline when grid-elements don't have the same height

i have issue when using 3grid elements in 1row:

Row #1: <20%> <60%> <20%> Row #2: <20%> <60% with 2lines of strings> <20%> Row #3: <20%> <60% with 2lines of strings> <20%> Row #4: <20%> <60%> <20%> Row #5: <20%> <60%> <20%>

issues: the second row and third row grids element has underlined not the same to the second elements of the row