main article container fit to wrapper on both sides

Hello, I just started to use your Travelify theme and try to make few arrangements. With some things I am successful, some not. I would like to make main article section fit the wrapper, that means not to have white container “box” (like in header section) and I cannot find the way… May I ask you for your help? Printscreen is enclosed.
Best regards and thanks for nice theme!

Finally RESOLVED!! Thanks to Aigars`s code which I found accidentally:

article, .widget {
-webkit-box-shadow: none;
box-shadow: none;

Big thanks! and best regards to Aigars.

Hi @spongeboob4x4,

Awesome great to see you got that resolved.

Please advise if you have more questions.

Have a fantastic day!