The CSS3 Flexbox Grid system is based on the idea of a parent/child container relationship. The parent, if we call it “row” needs to have “display: flex;”. For example: /* Parent */ .row { display: flex; } The child, if we give it a class name of “col”, should have “flex: 1;”. The 1 here … Continue reading HTML & CSS: How to understand the basics of Flexbox for responsive web design