getting rid of space between borders

.carttable table{
border-collapse: collapse;
padding:0px;
margin:0px;
}
.carttable td{
border:solid 1px #5f3f28;
border-collapse: collapse;
}
.carttable th{
border:solid 1px #5f3f28;
font-weight:bold;
border-collapse: collapse;
}

how do i get rid of the space betwen hte cells and just show it as 1 border line

Believe you are working on a table(haven't posted the full code).
Try by giving cellpadding="0" and cellspacing="0" to your table.

Or, if it is the problem of right and left border of two adjacent cells, have a try by putting border-left:none; border-bottom:none; to your td. But you may have to put some extra style to get borders for the extreme left and bottom cells.