But going to w3schools is like trying to kill a fly with a flyswatter with a dashed red border of weight 2px. Their examples are so basic, pre-canned, and repet

But going to w3schools is like trying to kill a fly with a flyswatter with a dashed red border of weight 2px. Their examples are so basic, pre-canned, and repetitious between pages that you rarely see useful options and intricacies that each tag/property may posses. For super quick syntax checks ("Is it fill-opacity or opacity?") MDN might be a little overboard, but as any sort of reference beyond 3 line snippets it is the link that I always look for. I usually append MDN to the end of my searches for HTML/SVG help.