For building web-page, I use the github pages and jekyll remote theme. I am not familiar with jekyll and remote theme, so cannot know which part should be modified and which part cannot be in the remote theme.
Also, I am currently using the so-simple-theme as a remote theme and want to change the layout of the blog postings to make the article section wider (at default, most of the pages are filled with empty space, so cannot see the code very clearly) To make the post section itself to be wider, which file and content should be changed?