format, ensure ci runs on prs

.github/workflows/ci.yaml

@@ -1,6 +1,9 @@
 name: Build and Test
 
 on:
+  pull_request:
+    branches:
+      - v4
   push:
     branches:
       - v4

quartz/styles/base.scss

@@ -29,7 +29,7 @@ section {
 
 ::selection {
   background: color-mix(in srgb, var(--tertiary) 75%, transparent);
-  color: var(--darkgray)
+  color: var(--darkgray);
 }
 
 p,