blowfish/layouts/partials/hero/background.html

{{- $images := .Resources.ByType "image" -}}
{{- $featured := $images.GetMatch "*feature*" -}}
{{- if not $featured }}{{ $featured = $images.GetMatch "{*cover*,*thumbnail*}" }}{{ end -}}
{{- with $featured -}}
{{ with .Resize "1200x" }}
<div id="hero" class="h-[250px] md:h-[300px] lg:h-[350px]"></div>
<div class="fixed inset-x-0 top-0 h-[900px] single_hero_background nozoom"
    style="background-image:url({{ .RelPermalink }});">
    <div class="absolute inset-0 bg-gradient-to-t from-neutral dark:from-neutral-800 to-transparent mix-blend-normal">
    </div>
    <div
        class="absolute inset-0 opacity-30 dark:opacity-60 bg-gradient-to-t from-neutral dark:from-neutral-800 to-neutral dark:to-neutral-800 mix-blend-normal">
    </div>
</div>
<div id="background-blur" class="fixed opacity-0 inset-x-0 top-0 h-full single_hero_background nozoom backdrop-blur-2xl"></div>
<script>
    window.addEventListener('scroll', function (e) {
        var scroll = window.pageYOffset || document.documentElement.scrollTop || document.body.scrollTop || 0;
        var background_blur = document.getElementById('background-blur');
        background_blur.style.opacity = (scroll / 300)
    });
</script>
{{ end }}
{{- end -}}