How do I make the background of my primary sidebar white or transparent?

And how do I add a solid black line around it?

And solid gray lines between its widgets?

Thanks! This would make my website look sooo much better.

Hey!

The sidebar background should be white by default. Could you please post the link to the page where you have Business Elite theme published? We will have a look ASAP and provide a solution.

Thanks, have a good day!