The forums ran from 2008-2020 and are now closed and viewable here as an archive.
Home › Forums › CSS › Margin-top affects to another element besides › Reply To: Margin-top affects to another element besides
It’s because the .sorial-grande has position: absolute; taking it out of document flow.
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.