Updated assets

_mixins.pug

@@ -4,8 +4,12 @@ mixin responsive_image(thumb, fallback, urls, sizes)
   img(src=thumb, data-src=fallback, sizes=sizes, data-srcset=urls)&attributes(attributes)
 
 mixin theme_card(id, name)
+  - var thumb = "/assets/images/#{id}@thumb.jpg"
+  - var fallback = "/assets/images/#{id}@266.png"
+  - var urls = "/assets/images/#{id}@220.png 220w, /assets/images/#{id}@266.png 266w, /assets/images/#{id}@335.png 335w, /assets/images/#{id}@352.png 352w, /assets/images/#{id}@532.png 532w"
+
   a.card(href="/assets/images/#{id}.png")
     .image
-      +responsive_image("/assets/images/#{id}@thumb.jpg", "/assets/images/#{id}@266.png", "/assets/images/#{id}@220.png 220w, /assets/images/#{id}@266.png 266w, /assets/images/#{id}@335.png 335w, /assets/images/#{id}@352.png 352w, /assets/images/#{id}@532.png 532w", "(max-width: 767px) calc(50vw - 2em + 1px), (max-width: 991px) 336px, (max-width: 1199px) 221px, 267px")
+      +responsive_image(thumb, fallback, urls, "(max-width: 767px) calc(50vw - 2em + 1px), (max-width: 991px) 336px, (max-width: 1199px) 221px, 267px")
     .content
       .extra=name
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