{{- $ph := cond (or (not .Params.header) (not (fileExists (printf "static/%s" .Params.header)))) (cond (or (not .Parent.Params.header) (not (fileExists (printf "static/%s" .Parent.Params.header)))) "/img/speedy.png" .Parent.Params.header) .Params.header }}
<a href="{{ absURL .URL }}">
<img style="background-image: url({{ relURL $ph }})">
{{- $ph := cond (or (not .Params.header) (not (fileExists (printf "static/%s" .Params.header)))) (cond (or (not .Parent.Params.header) (not (fileExists (printf "static/%s" .Parent.Params.header)))) "/img/speedy.png" .Parent.Params.header) .Params.header }}
<a href="{{ absURL .URL }}">
<img style="background-image: url({{ relURL $ph }})">