Open2023/02/27にコメント追加3CSS: rubyCSSmimi2023/02/26https://lopan.jp/ruby-elements/layout/ mimi2023/02/26https://www.codegrid.net/articles/2021-ruby-1/ mimi2023/02/27https://codepen.io/miminari-the-scripter/pen/dyqpVmW