Ruby

[ruby/rdoc] Improve layout CSS

• Use the grid property for the page layout.
  • https://caniuse.com/css-grid
• Adjust the <main> margin.
• Make the sidebar responsive and resizable.
  • https://caniuse.com/css-math-functions
  • https://caniuse.com/css-resize

Note all modern browsers support the new CSS properties and functions used by this change.

https://github.com/ruby/rdoc/commit/2db5097c41