I'm building a website, and I replaced the blog name and description in the header with a logo. This thread reports my adventures with this.
I finished with everything OK, except for some extraneous white space at the top when a smaller (5" wide) screen is used. To fix this, I need to know just what causes the layout to change when a smaller device is used. In Twenty Eleven this includes putting the sidebar at the bottom of the page.
Is it something in style.css? In functions.php?