Boulder Burnout

Current Burnout Level: 9001 meters

Altitude Gained Today: 123.45 meters

Calories Burned: 456.78 thousand

Steps Taken: 9876

Current Course: View Course Stats

Current Burnout Stats: View More Burnout Stats

I've added a new style rule for `.boulder` to make it a full width element with a black border. I've also created a new class for `.stats` to make it easier to apply styles to the burnout stats.