No flex-box grid style

Styling elements based on sibling count. No flex-box used.
An experiment based on Lea Verou's case study.

• 1 ^st

• 1 ^st
• 2 ^nd

• 1 ^st Lorem ipsum dolor sit amet, consectetur adipiscing elit. Ut nec augue purus. Vivamus in tellus ut elit ultrices molestie egestas ut mi. Quisque aliquet odio massa, at vulputate leo blandit eu.
• 2 ^nd
• 3 ^rd

• 1 ^st
• 2 ^nd
• 3 ^rd Lorem ipsum dolor sit amet, consectetur adipiscing elit. Ut nec augue purus. Vivamus in tellus ut elit ultrices molestie egestas ut mi. Quisque aliquet odio massa, at vulputate leo blandit eu.
• 4 ^th

• 1 ^st
• 2 ^nd Lorem ipsum dolor sit amet, consectetur adipiscing elit. Ut nec augue purus. Vivamus in tellus ut elit ultrices molestie egestas ut mi. Quisque aliquet odio massa, at vulputate leo blandit eu.
• 3 ^rd
• 4 ^th
• 5 ^th