bigbluebutton-Github/bigbluebutton-html5/imports/ui/stylesheets/mixins/focus.scss

@import "/imports/ui/stylesheets/variables/palette";
@import "/imports/ui/stylesheets/variables/general";

@mixin elementFocus($color: $color-primary){
  &:focus {
    outline: none;
    box-shadow: inset 0 0 0 $border-size-large $color;
    border-radius: $border-size;
  }
}

@mixin inputFocus($shadow, $color: $color-primary) {
  &:focus {
    outline: none;
    border-radius: $border-size;
    box-shadow: 0 0 0 $border-size $shadow, inset 0 0 0 1px $color;
  }
}