{{- $featured_image := .Scratch.Get "featured_image" }} {{- /* Default to the full size image */ -}} {{- /* Trimming the slash and adding absURL make sure the image works no matter where our site lives */ -}} {{- $default_image_url := (trim $featured_image.RelPermalink "/") | absURL }} .has-header-image { background-image: url('{{ $default_image_url }}'); } {{ $scratch := newScratch -}} {{- /* If breakpoints are defined, provide a resized image for each */ -}} {{- $anchor := .Params.featured_image_data.anchor | default "Top" -}} {{- /* Default header image height is approximately 500px */ -}} {{- $height := 500 -}} {{- /* If there's a description, the header is taller */ -}} {{- if .Description -}} {{- $height = add $height 100 -}} {{- end -}} {{- with .Site.Params.breakpoints -}} {{- range $breakpoint := . -}} {{- /* Default mobile breakpoint for Tachyons is 480 */ -}} {{- if and (ge $breakpoint 480) (ge $featured_image.Width $breakpoint) -}} {{- $breakpoint_image := $featured_image.Resize (print $breakpoint "x") -}} {{- $options := print $breakpoint "x" $height " " $anchor -}} {{- $breakpoint_image = $breakpoint_image.Crop ($options) -}} {{- $breakpoint_image_url := (trim $breakpoint_image.RelPermalink "/") | absURL }} @media only screen and (max-width: {{ $breakpoint }}px) { .has-header-image { background-image: url('{{ $breakpoint_image_url }}'); } } {{- end -}} {{- end -}} {{- end }}