initial commit, add Publish, add minimal theme, add content

Content/Archive/220123-ff.de v10 felixfoertsch.github.io/_sass/bootstrap/mixins/_alert.scss

@@ -0,0 +1,9 @@
+@mixin alert-variant($background, $border, $color) {
+  color: $color;
+  @include gradient-bg($background);
+  border-color: $border;
+
+  .alert-link {
+    color: darken($color, 10%);
+  }
+}