Download and extract the latest 3.x.x version of
Bootstrap Framework Source Files into the root of your new sub-theme. After
it has been extracted, the directory should be renamed (if needed) so it reads
If for whatever reason you have an additional bootstrap directory wrapping the
first bootstrap directory (e.g. ./THEMENAME/bootstrap/bootstrap), remove the
wrapping bootstrap directory. You will only ever need to touch these files if
or when you upgrade your version of the Bootstrap Framework.
WARNING: Do not modify the files inside of
./THEMENAME/bootstrap directly. Doing so may cause issues when upgrading the
Bootstrap Framework in the future.
The ./THEMENAME/scss/_default-variables.scss file is generally where you will
spend the majority of your time providing any default variables that should be
used by the Bootstrap Framework instead of its own.
The ./THEMENAME/scss/overrides.scss file contains various Drupal overrides to
properly integrate with the Bootstrap Framework. It may contain a few
enhancements, feel free to edit this file as you see fit.
The ./THEMENAME/scss/style.scss file is the glue that combines:
_default-variables.scss, Bootstrap Framework Source Files and the
overrides.scss file together. Generally, you will not need to modify this
file unless you need to add or remove files to be imported. This is the file
that you should compile to ./THEMENAME/css/styles.css (note the same file
name, using a different extension of course).