I’m having a similar problem with the cart totals section. It appears the cell does not span the width of the table. Also, the calculate shipping button wraps to the next line because the cell is too small. How can I decrease the width of the product table, and increase the width of the totals table? I tried doing this with the CSS, but it’s just not working for me.
It seems you are using obsolete version of Flat responsive ie 1.2.3. We are already up to version 4.2.4. We request you to update theme to latest version and let us know if you got any issue on this.
Note: Updating a theme to latest version will overwrite your all changes you have made on flat responsive pro theme , but this won’t effect on child theme. So we request to take a back up of your website first then update to flat responsive v 4.2.4.