What are some steps to achieve a Bootstrap v3 appearance with Bootstrap v4 styling?

I've been using Bootstrap 3.3.7 and now I'm looking to upgrade to v4.

In my previous setup, I had included bootstrap.min.css and bootstrap-theme.min.css in my HTML code. However, during the migration to v4, I couldn't locate the bootstrap-theme.min.css file anymore. I was unsure of its whereabouts and what alternatives were available.

Where can I find bootstrap-theme.min.css for the latest release of v4, or is there a similar alternative within vanilla Bootstrap achieved by tweaking SCSS variables?

This inquiry was initially posted on Bootstrap's GitHub Issue Tracker by @pankajparkar

htmlcsstwitter-bootstraptwitter-bootstrap-4

Answer №1

The latest version of Bootstrap (v4) no longer includes the separate theme file (bootstrap-theme.min.css).

Instead, the optional theme has been replaced with configurable options using SCSS variables.

Visit this link for more information on global changes in Bootstrap 4.

To achieve a similar look to v3, you need to include the following SCSS variables as outlined in the Bootstrap 4 documentation:

$enable-gradients: true;
$enable-shadows: true;

After adding these variables, make sure to re-compile the SCSS source code.

Note: Follow the instructions provided in the migration guide to avoid any issues with components or other migration-related surprises.

Answer №2

Just like @wolfy mentioned, the first step is to compile the scss files by adjusting variables such as $enable-gradients: true; and $enable-shadows: true; in order to generate a custom bootstrap theme in CSS format.

Due to significant changes in the navbar API, your existing navbar styles may not function correctly. It's necessary to refer to the Twitter Bootstrap navbar API (alpha version) and update your old HTML accordingly, which could take some time.

Stay informed about any new developments by monitoring this github issue.

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