Classical 1980s Simon game with two play modes and selectable difficulty. This is a JavaScript & Sass project for Free Code Camp challenge. Also applied normalize.css，Bourbon Mixins， CSS animations and flexbox.
It’s the classical Simon game. It will demo the pattern first, you follow the patter and click each block. Successfully doing so will lead you to next level.
###Game difficulty Default game difficulty is Hard (20 steps in total to win the game). You can use the dropdown menu to choose other difficulties (9 steps or 15 steps).
###Game mode In normal mode, you will stay in the same level if you clicked wrong.
In strick mode, you will go back to level 0 if you clicked wrong.
###Others
Switch on/off works as the real switch in life.
Start button can reset game to level 0 and start from beginning.
Tempo will speed up after level 5, 9 and 13.
Mainly inspired by (just reverse engineering, never looked into the code) https://codepen.io/Em-Ant/full/QbRyqq/
Clear All timeout, inspired by stackoverflow questions http://stackoverflow.com/questions/3847121/how-can-i-disable-all-settimeout-events
Bourbon.sass for cross browsers compatibility https://github.com/thoughtbot/bourbon