If we shows the widgets horizontally within one column than there will be unwanted gap between widgets if you add more than 4 widgets. So to reduce the gap we created 4 column sidebars for the footer. If you need to display a widget in horizontal row you can add one widget to all 4 columns.
The issue is that they all display vertically, no matter which way you enter them. I tried putting 4 in, one in each column, to see if it would jump to a horizontal alignment, but it stays vertical. Is there a piece of CSS code that I add/edit to make it work properly?
If you have put any one widget in all four column(footer sidebars) and still it display as vertically then please provide us your site URL? So that we can see the exact issue.