I' rocky and, after "Gettin started" I follow instructions of https://getbootstrap.com/docs/4.3/layout/overview/ (I guess something is missing in that example)
I put:
- link to css file in head tag.
- near end of body, includes of jquery (jquery-3.3.1.slim.min.js)
- poperpopper.min.js
- and then bootstrap.min.js I have all the links and and all other includes finally I have:
@include media-breakpoint-up(sw) {
.hide-ph-flex {
display: block;
}
}
.hide-ph-flex {
display: none;
}
But it doesn't work, class "hide-ph-flex" its alway in display: none
, and
FireFox debugger warns: Unknown rule or error reading rule at @include
I suppose I'm forgetting a file, ANY HELP???