I have a multicolumn header in my grid. I want to show an underline/border across the top level header. if I add a text-decoration it just shows the underline across the text and a border blends into the other header. (Banks with BOLI vs Averages for Banks with BOLI)
Below is my grid css for the header and grid declaration. is there a way I can have an underline for the headers but that spans across the whole column?