The forums ran from 2008-2020 and are now closed and viewable here as an archive.
Home › Forums › CSS › Annoying DIV › Re: Annoying DIV
Thanks, 3px and 966px seemed to do the trick.
And the space between the grey div and bottom border was due to the fill colour of the bottom image which I missed at first.
Frontend Masters is the best place to get it. They have courses on all the most important front-end technologies, from React to CSS, from Vue to D3, and beyond with Node.js and Full Stack.