Removing sidebar spaces

Firstly, cheers for the wonderful theme. I love how it was so easily customizable. Is it possible to remove the sidebar spaces so that the picture and post stretch fully to the left and right of the page?

My website is

Hi @magnusmulyadi,

I hope you are well today and thank you for your question.

Could you please share me the screenshot of spaces that you want to remove so that i can better understand it and will help you to remove it?

Kind Regards,