Difference between XPath and css selector

https://gist.github.com/slotix/11f0930b2d46d2946249a10e6216735b#file-css3vsxpath-csv

	Goal	CSS 3	XPath
	All Elements	*	//*
	All P Elements	p	//p
	All Child Elements	p>*	//p/*
	Element By ID	#foo	//*[@id=’foo’]
	Element By Class	.foo	//*[contains(@class,’foo’)]
	Element With Attribute	*[title]	//*[@title]
	First Child of All P	p>*:first-child	//p/*[0]
	All P with an A child	Not possible	//p[a]
	Next Element	p + *	//p/following-sibling::*[0]
	Previous Element	Not possible	//p/preceding-sibling::*[0]