themes/bthree/src/styles/_release-logs.sass

@@ -2,18 +2,19 @@
 
 .release-logs
   &-header // .release-logs-header
+    --header-bg-blursize: 1.8rem
+
     position: relative
     overflow: hidden
 
-    $header-bg-blursize: 1.8rem
     &-bg
       background-size: cover
-      bottom: -$header-bg-blursize
-      filter: blur($header-bg-blursize)
-      left: -$header-bg-blursize * 2
+      bottom: calc(var(--header-bg-blursize) * -1)
+      filter: blur(var(--header-bg-blursize))
+      left: calc(var(--header-bg-blursize) * -2)
       position: absolute
-      right: -$header-bg-blursize * 2
-      top: -$header-bg-blursize * 2
+      right: calc(var(--header-bg-blursize) * -2)
+      top: calc(var(--header-bg-blursize) * -2)
       z-index: 0
 
     &-info