how to add border in the table row?

Adding border in the table row i.e. tr seems to be easier task , but eventually it turn out to be trickier.

How ?? yes I have tried with this solution while I needed a border to my design for each row :-

tr{
border-bottom:2px solid #ccc;
}

But no, it is not the way. by writing above code you turn out to be with no border.For adding border to tr we need to define the tr tag in block type.

so here it is.:-

tr{
display:block;
border-bottom:2px solid #ccc;
}