Congrats to editor @fantasai and the @csswg for the newly published @w3c #WebStandard "CSS Box Model Module Level 3" #timetoadopt #CSS w3.org/TR/css-box-3/

Layout in #CSS starts with boxes. The basic box is a rectangle with margins on all sides (to offset it from other boxes), a border, some padding (to separate the content from the border), and content (text, an image, other boxes).