https://webdesign.tutsplus.com/series/postcss-deep-dive--cms-889 https://webdesign.tutsplus.com/tutorials/using-postcss-together-with-sass-stylus-or-less--cms-24591
https://meyerweb.com/eric/tools/color-blend/#CC0000:660000:5:hex
.css_nano, .css_nano + p, [class*="css_nano"], .css_nano { /* cssnano will remove this comment */ display: flex; font-weight: normal; margin-top: 1rem; margin-bottom: 2rem; margin-left: 1.5rem; margin-right: 2.5rem; font-weight: normal; padding: 1.75rem; width: calc(50rem - (2 * 1.75rem)); }