Support H1, H2 etc

[digitaljohn]

I think this regex does not support h1 tags etc

css-components/src/cli/utils.ts

Line 22 in 116e5c7

/([a-zA-Z_]*)(?:[.]{1})([a-zA-Z_]+[\w\-_]*)(?:[\s\.\,\{\>#\:]{0})/gim