chore: import upstream snapshot with attribution

curriculum/structure/blocks/sass.json

@@ -0,0 +1,44 @@
+{
+  "isUpcomingChange": false,
+  "dashedName": "sass",
+  "helpCategory": "HTML-CSS",
+  "challengeOrder": [
+    {
+      "id": "587d7dbd367417b2b2512bb4",
+      "title": "Store Data with Sass Variables"
+    },
+    {
+      "id": "587d7dbd367417b2b2512bb5",
+      "title": "Nest CSS with Sass"
+    },
+    {
+      "id": "587d7dbd367417b2b2512bb6",
+      "title": "Create Reusable CSS with Mixins"
+    },
+    {
+      "id": "587d7dbe367417b2b2512bb8",
+      "title": "Use @if and @else to Add Logic To Your Styles"
+    },
+    {
+      "id": "587d7dbe367417b2b2512bb9",
+      "title": "Use @for to Create a Sass Loop"
+    },
+    {
+      "id": "587d7dbf367417b2b2512bba",
+      "title": "Use @each to Map Over Items in a List"
+    },
+    {
+      "id": "587d7dbf367417b2b2512bbb",
+      "title": "Apply a Style Until a Condition is Met with @while"
+    },
+    {
+      "id": "587d7dbf367417b2b2512bbc",
+      "title": "Split Your Styles into Smaller Chunks with Partials"
+    },
+    {
+      "id": "587d7fa5367417b2b2512bbd",
+      "title": "Extend One Set of CSS Styles to Another Element"
+    }
+  ],
+  "blockLayout": "legacy-challenge-list"
+}