{{ $reAltTitleIn := "<img src=\"([^\"]+)\" alt=\"([^\"]*)\" title=\"([^\"]+)\">" }}
{{ $reAltTitleOut := "<figure><img src=\"$1\" alt=\"$2\" title=\"$3\"><figcaption>$3</figcaption></figure>" }}
{{ $contentWithImgCaptures := .Content | replaceRE $reAltTitleIn $reAltTitleOut | safeHTML }}

{{ $wrappedTable := printf "<div class=table-responsive> ${1} </div>" }}
{{ $contentWithWrappedTables := $contentWithImgCaptures | replaceRE "(<table>(?:.|\n)+?</table>)" $wrappedTable | safeHTML }}
{{ $old := "<table>" }}
{{ $new := printf "<table class=\"%s\">"  "table mb-5" }}
{{ $contentWithWrappedTables | replaceRE $old $new | safeHTML }}