Defining a subclass of a class defined by the Library is deemed a mode
of using an interface provided by the Library.

  A "Combined Work" is a work produced by combining or linking an
Application with the Library.  The particular version of the Library
with which the Combined Work was made is also called the "Linked
Version".

background-color: transparent;\n  border: 0;\n}\n\n// Future-proof disabling of clicks on `<a>` elements\n\n// stylelint-disable-next-line selector-no-qualifying-type\na.close.disabled {\n  pointer-events: none;\n}\n",".toast {\n  // Prevents from shrinking in IE11, when in a flex container\n  // See https://github.com/twbs/bootstrap/issues/28341\n  flex-basis: $toast-max-width;\n  max-width: $toast-max-width;\n  @include font-size($toast-font-size);\n  color: $toast-color;\n  background-color: $to...