The styles are made with mobile first structure. So the main styles, made for up to 360px width devices, have no media query. The desktop styles are wrapped into a 1110px min-width media query, but they are affecting the whole page style. When I check the styles with Chrome Inspector, they don't even show the media query...
Here's the link of the file: http://www.institutopsicode.com/wp/wp-content/themes/psicode/style.css
You can see the problem at this URL: http://www.institutopsicode.com/wp/2015/08/31/tu-mente-te-miente/
The sidebar is being shown at the bottom of the mobile version, while in the main styles for 360px devices it has a display:none;
I've tried many things and orders but still doesn't make what I need it to...
Thanks for your time guys!
If the intention is for the #sidebar {display:block} part to be inside the media query for min-width:1110px, you have a problem.
There is a } that ends the media query in line 1208, but the code that says #sidebar {display:block} is in line 1335, outside of any media query.
There is also an extraneous } in line 1600, so I think you should remove the one at line 1208.