docs: add mobile support + seo

postcss.config.cjs

@@ -5,7 +5,13 @@ const config = {
     require('postcss-strip-inline-comments'),
     require('postcss-extend-rule'),
     require('postcss-nested'),
-    require('postcss-preset-env'),
+    require('postcss-preset-env')({
+      features: {
+        'custom-media-queries': {
+          importFrom: './src/lib/styles/variables/queries.postcss'
+        }
+      }
+    }),
     require('postcss-pxtorem'),
     require('autoprefixer'),
     process.env.NODE_ENV === 'development' && require('cssnano')({