Top 20 NuGet CSS Packages

The Coherent UI .NET browser controls are a substitute for the default .NET WebBrowser control. They address the deficiencies of the standard .NET WebBrowser by providing support for the latest HTML5, CSS3 and JavaScript. Coherent UI is powered by the same technology as the Google Chrome bro...
Reduce the number of HTTP requests required to render the page, resulting in faster page loads by combining and compressing multiple JavaScripts and stylesheets.
WebToPDF.NET is a 100% .NET component / class library that converts HTML to PDF. The converter fully supports HTML 4.01, XHTML 1.0, XHTML 1.1 and CSS 2.1 including page breaks, forms, links and JavaScript execution.
Free Shamrock theme(only CSS) from bootswatch.com for Twitter Bootstrap -Sleek, intuitive, and powerful mobile-first front-end framework for faster and easier web development. [Based on Twitter Bootstrap Version 3.1.1]. For javascript font files use official Bootstrap package.
Free Darkly theme(only CSS) from bootswatch.com for Twitter Bootstrap -Sleek, intuitive, and powerful mobile-first front-end framework for faster and easier web development. [Based on Twitter Bootstrap Version 3.2.0]. For javascript font files use official Bootstrap package.
Free Yeti theme(only CSS) from bootswatch.com for Twitter Bootstrap -Sleek, intuitive, and powerful mobile-first front-end framework for faster and easier web development. [Based on Twitter Bootstrap Version 3.2.0]. For javascript font files use official Bootstrap package.
Free Lumen theme(only CSS) from bootswatch.com for Twitter Bootstrap -Sleek, intuitive, and powerful mobile-first front-end framework for faster and easier web development. [Based on Twitter Bootstrap Version 3.2.0]. For javascript font files use official Bootstrap package.
Free Cupid theme(only CSS) from bootswatch.com for Twitter Bootstrap -Sleek, intuitive, and powerful mobile-first front-end framework for faster and easier web development. [Based on Twitter Bootstrap Version 3.1.1]. For javascript font files use official Bootstrap package.
Free Superhero theme(only CSS) from bootswatch.com for Twitter Bootstrap -Sleek, intuitive, and powerful mobile-first front-end framework for faster and easier web development. [Based on Twitter Bootstrap Version 3.2.0]. For javascript font files use official Bootstrap package.
Take a look at https://cssvariableshim.azurewebsites.net and try it out there.
ExCSS reads and parses stylesheets using CSS 3 and CSS 2 selector specifications, and is easily queryable from LINQ using its simple and readable object model.
Configures a project to automatically minify and/or bundle CSS and JS files during build. No extra dependencies are added to your project. Setup ajaxmin xml config files as required.
Famfamfam-Mini, made available in various package managers, shipped with CSS spritesheet
Famfamfam-Silk, made available in various package managers, shipped with CSS spritesheet
A module that compresses js into a single file, and css into a single file. More then likely you really want an msbuild task to do this. Get nuget package Talifun.Crusher.MsBuild if this is the case.
Nancy.BundleIt minifies, obfuscates, concatenates, caches and versions all of your Javascript and CSS files.
AlertifyJS is a javascript framework for developing pretty browser dialogs and notifications.
Co-locate HTML, CSS, JavaScript and image files that make up a page or component for easier reuse and maintainability. Auto generate your MVC bundles to ensure the right files are loaded in the right order.
MSBuild task for expanding Web Essentials bundles in HTML files.