.aaa{
	width:   	calc	 	(1.5em + .5rem + 2px) 	;
}

.aaa{
	width:   	calc	 	(1.5em + .5rem + 2px)	
}

.aaa{
	/* this is a comment */
	width:   	calc	 	(1.5em + .5rem + 2px)
}

.aaa{
	content  :  "this is a string"	;
	width:   	calc	 	(1.5em + .5rem + 2px)
}