But typically require horizontal extra vertical css3 hacks reverse & workarounds to do right. Why should you columns use the responsive flexbox grid? system flexgrid provides simpler & gutter more flexible layout options in css. Easy vertical alignment of content html within a scss parent flexbox element. Easy reordering of content across devices & screen spaces resolutions with the help of media queries easy css only equal height columns for your grid based no layouts alignments all these things are possible outside flexbox