testt

            std::map<std::string,std::string> elementEnv =

                resolveCustomProperties(cssProps, frame.customPropertyEnv);

            // This element's own attributes, so a descendant's matched rule

            // can verify an attribute-selector condition on THIS ancestor

            // (e.g. the "[data-fit=fill]" in ".fade-box[data-fit=fill] img")

            // instead of it being ignored -- see AncestorFrame::attributes

            // and getCSSRules's own use of the same pattern for the target

            // element itself.

            std::map<std::string,std::string> elemAttrs;

            for (const libhtmlpp::HtmlElement::Attributes *attr = el->firstAttribute(); attr;

                 attr = attr->nextAttribute()) {

                elemAttrs[attr->getKey()] = attr->getValue();

            }

            // This element's own ancestor chain, for its children's matching

            // (see Frame::ancestorChain) -- appended once here and reused at

            // every childFrames.push_back below, rather than re-splitting

            // cssClass per push site.

            std::vector<libhtmlpp::AncestorFrame> childAncestorChain = frame.ancestorChain;

            childAncestorChain.push_back({tag, splitClassList(cssClass), elemId});

            childAncestorChain.push_back({tag, splitClassList(cssClass), elemId, elemAttrs});

            // ---- Map HTML tags to widget types ----