Left file: appwork-v1_2_2/rails-starter/config/autoprefixer.yml  
Right file: appwork-v1_3_0/rails-starter/config/autoprefixer.yml  

1	browsers:	=	1	browsers:
2	- "> 1%"	<>	2	- ">= 1%"
3	- "last 2 versions"	=	3	- "last 2 versions"
		<>	4	- "not dead"
			5	- "Chrome >= 45"
4	- "Firefox ESR"		6	- "Firefox >= 38"
5	- "Opera 12.1"		7	- "Edge >= 12"
6	- "ie >= 10"		8	- "Explorer >= 10"
			9	- "iOS >= 9"
			10	- "Safari >= 9"
			11	- "Android >= 4.4"
			12	- "Opera >= 30"