[css-grid] Reduced Subgrid Proposal from fantasai on 2016-04-14 (www-style@w3.org from April 2016)#css grid layout#subgrid·lists.w3.org·Nov 22, 2016[css-grid] Reduced Subgrid Proposal from fantasai on 2016-04-14 (www-style@w3.org from April 2016)