Added minified version with gulp and removed duplicate html styling

[ixahmedxi]

I added gulp and created a task to minify the css file, the file not minified is 8kb on disk while the minified version is half that size with only 4kb size on disk. I've also noticed a duplicate html styling in the file and merged the two properties into one for better code organization.

Just a question, should I create a scss or stylus versions with variables so anyone could adjust the styling to their needs, how about mixins that could be used just when the user needs to normalize that part, for example if I am not going to use any code tags in my website it would be better to not load the normalizing styles for the code tag, right?

[sindresorhus]

I appreciate the PR, but I'm not interested in having a build-step here. See my comment in #9 (comment).

[sindresorhus]

for example if I am not going to use any code tags in my website it would be better to not load the normalizing styles for the code tag, right?

We're talking just a few bytes. Not worth doing anything extra to avoid that.