Correct btn-dark -> btn--dark
Correct btn-dark -> btn--dark


cssbristol/cssbristol.github.io,cssbristol/cssbristol.github.io,cssbristol/cssbristol.github.io,cssbristol/css-website-2015,cssbristol/cssbristol.github.io,cssbristol/cssbristol.github.io