Reply To: Problem with Masonry

[TheDoc]

For centering: http://masonry.desandro.com/options.html#isfitwidth

As for the responsiveness, you’ll want to look into media queries. I would certainly end up with a single stylesheet that you’re loading to your users but most professional front-end developers use some sort of pre-processor like LESS or Sass which means we’re able to set up lots of smaller files that all get built into one file on save.

So you might have something like:

/styles 
    _header.scss 
    _layout.scss
    _footer.scss
    _typography.scss
    _mixins.scss
    style.scss

Where style.scss includes all of the other stylesheets into it. http://sass-lang.com/guide