http://3oamv2de6ooacy72hv3ulym3i3vvlprlkqas7hhzo4pu5nyxnji37zad.onion/blogs/writing-a-website-part-2
This example contains two declarations, one for color and the other for text-align . Each pair specifies a property of the element(s) we are selecting ( h1 in this case), then a value that we'd like to give to the property.