How to get css background color on <tr> tag to span entire row
table{border-collapse:collapse;}
I prefer to use border-spacing as it allows more flexibility. For instance, you could do
table {
border-spacing: 0 2px;
}
Which would only collapse the vertical borders and leave the horizontal ones in tact, which is what it sounds like the OP was actually looking for.
Note that border-spacing: 0 is not the same as border-collapse: collapse. You will need to use the latter if you want to add your own border to a tr as seen here.
Try this:
.rowhighlight > td { background: green;}