Merge pull request #8318 from DaSchTour/dev/8257

possible solution for #8257

diff --cc scss/components/_dropdown-menu.scss
Simple merge

diff --cc scss/components/_media-object.scss
Simple merge

diff --cc scss/components/_reveal.scss
Simple merge

diff --cc scss/components/_top-bar.scss
Simple merge

diff --cc scss/components/_visibility.scss
Simple merge

diff --cc scss/grid/_flex-grid.scss
Simple merge

diff --cc scss/util/_breakpoint.scss
Simple merge