Improvements

- Small adjustments for table striping
- Consitent shadows for Dark mode
- Bigger Checkboxes, Radios and Switches
- Disable transitions for Checkboxes, Radios and Details
- Simplier .grids in docs
- Replace .js for internal scroll with CSS
- Better aside adjustment in .js
- Many small improvements in docs

docs/scss/layout/_main.scss

@@ -79,3 +79,13 @@ div[role="document"] section a[href*="//"]:not([href*="https://picocss.com"]):no
   background-size: .66rem auto;
   content: '';
 }
+
+// Form grid
+// ––––––––––––––––––––
+
+form.grid {
+  > input:not([type=checkbox]):not([type=radio]),
+  > button {
+    margin-bottom: 0;
+  }
+}