Initial working draft.

layouts/_shortcodes/img.html

@@ -0,0 +1,5 @@
+{{- $src := .Get "src" }}
+{{- $alt := .Get "alt" }}
+{{- $title := .Get "title" }}
+{{- $class := .Get "class" }}
+<img class="img-fluid {{ $class }}" src="{{ $src }}" title="{{ $title }}" alt="{{ $alt }}">