In the following example, a map of colors comprise a theme for a Bootstrap app: $theme-colors: (Ĭhanging settings scratches the surface of what's possible. With Sass, complex tasks like changing the theme of an app are reduced to a simple value change in a settings file. Advanced features include nesting, variables, functions, and operators that can be used to produce flexible and reusable CSS libraries. Sass allows developers to use powerful features not typically available with CSS. Get Sass'yīootstrap 4 is built with the Sass CSS extension language (or pre-processor).
Other notable features include white spacing utilities, a new look & feel, and an extra break point for extra large (XL) screen sizes. Panels, wells, and thumbnails are now replaced with the concept of cards.
The underlying grid has been expanded to use Flexbox, which provides simpler and more flexible layout options. Bootstrap 4 now uses Sass (.scss) by default in its source code, unlike the previous version which was built on Less. However, the Bootstrap framework itself has changed pretty significantly from version 3 to 4. The main goal of Bootstrap remains the same-to provide simple components for building responsive, mobile-first sites. These changes are welcome as Bootstrap 4 gains traction as the new community default for HTML/CSS UI frameworks. This overhaul included the default Identity UI boilerplate and scaffolding generated content.
The change focused on migrating from Bootstrap 3 to Bootstrap 4, while at the same time modernizing and simplifying the user interface (UI). With the release of ASP.NET Core 2.2, project templates were overhauled.
We break down what's new.ĪSP.NET Core 2.2 hit global availability on December 4, 2018. ASP.NET Core 2.2 brings a migration from Bootstrap 3 to Bootstrap 4, major changes to project templates and the user interface, and more.
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