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Add to SafariWhen comparing PostCSS vs UiKit, the Slant community recommends UiKit for most people. In the question“What are the best minimal CSS frameworks?” UiKit is ranked 6th while PostCSS is ranked 12th. The most important reason people chose UiKit is:
The code is pretty clean and follows well-defined conventions.
Question Ranking
Pros
Pro Fast
PostCSS is 3-30 times faster than Sass (including libsass), Less, and Stylus
Pro Flexible
PostCSS allows you to opt-in to the features you need with plugins. This allows you to set it up to behave exactly like Sass, with nesting, mixing, extends, and more. On the other hand, it allows you to use plugins by themselves for things like auto-prefixing, minification, and more. You can even set up your own custom "stack" of plugins to do exactly what you like.
Pro Doesn't force designers to learn a new syntax
Rather than learn a different syntax, PostCSS allows you to write in pure CSS.
Pro JavaScript-based out of the box
Since it's basically CSS extended through JavaScript it works in the browser directly without the need to compile it beforehand.
Pro Well architected
The code is pretty clean and follows well-defined conventions.
Pro Ready to use themes available
There are plenty of ready to use themes available from the official website. You can choose the theme that you want to use from the dropdown menu and then download the CSS, LESS or SASS file for that theme to use for the website.
Pro Easy to use.
When using UIKit classes, it is used with the ui- prefix which is very good. Components are explained straight-forward.
Pro Built-in animation capabilities
UiKit has some built-in animation features which can be used to animate various components.
Pro Great style even out of the box
UiKit has a pretty good and clean style even out of the box without any customization needed.
Pro Very customizable
UiKit's rather minimal style can be easily customizable to create an entirely new look to fit the needs of the designer.
Pro Extremely modular
Every aspect of the framework is designed to be modular, this way designers can easily choose which components to add to their stylesheet without risking to damage the overall style.
Cons
Con Harder to install and keep working
The immense flexibility of PostCSS plus its current rapid evolution makes it harder to install, configure and keep running than the more monolithic and mature preprocessors.
Con Outdatet, plugins are often based on different postcss versions and don't work together properly
Con Some plugins need to run in a certain order
Some plugins can only work if initialized after some other plugins. For example, transforming and applying CSS variables needs to run before running a plugin which uses these variables inside conditional transformations.
Con Messy code classes
Nested classes become complicated to read to obtain desired result.
Con Not very popular
UiKit is not a very popular framework, especially compared to other options. As such it may be hard to find learning resources other than the official documentation or it may be more likely for development of UiKit to be dropped than for another more popular framework
Con Slow development
New features and updates trickle out over 6-12 month development cycles, bug fixes are more frequent but very slow and selective as well.
Con Pre-built starter templates are now behind a paywall
Easier to use Joomla! or Wordpress starter templates without paying money for it.
Con Closed development
Development is mostly done in-house and not publicly available.
