Help making a td full width

Help making a td full width
0

#1

I’m struggling to get a table cell to do what I want it to here…

This table is generated by a WordPress plugin so I can’t control the HTML. Can anyone help work out how to get the ‘We have a limited number of rooms…’ td to go full width underneath the other tds?

I’ve managed it on the lower widths using media queries but for some reason I just can’t get it to work on desktop.
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I’m sure I’m just being thick but nothing I’ve tried works.