img-retina mixin
Created by: MartijnCuppens
The img-retina
mixin is not documented in the docs.
https://github.com/twbs/bootstrap/blob/29f178d89129732d35ae812667709c64cdb28a6f/scss/mixins/_image.scss#L19-L36
Shall we:
- document this
- or remove the mixin (anno 2018 it might be better to use
.svg
s as background images)