Sanitize::Config::OSM = Sanitize::Config::RELAXED.dup
-Sanitize::Config::OSM[:elements] -= %w(div style)
-Sanitize::Config::OSM[:add_attributes] = { 'a' => { 'rel' => 'nofollow' } }
-Sanitize::Config::OSM[:remove_contents] = %w(script style)
+Sanitize::Config::OSM[:elements] -= %w[div style]
+Sanitize::Config::OSM[:add_attributes] = { "a" => { "rel" => "nofollow noopener noreferrer" } }
+Sanitize::Config::OSM[:remove_contents] = %w[script style]
+Sanitize::Config::OSM[:transformers] = lambda do |env|
+ env[:node].add_class("table table-sm w-auto") if env[:node_name] == "table"
+end