Theme Horse

@MairiaM To add padding to separate right sidebar Go to Appearance -> Theme Option -> Design Option Tab -> Custom CSS and paste the following CSS code:

#primary {
    width: 62.64%;
}
#secondary {
    margin-left: 6.06%;
}

@media only screen and (max-width: 1078px) {
	#primary, #secondary {
	   margin-left: 0;
	   width: 100%;
	}
}

Now, Click on Save All Changes Button and Refresh your browser.

Thank you!