oops uh this should be 50%

src/styles/_variables.scss

@@ -20,7 +20,7 @@
      */
     --app-height: 100vh;
     --border-radius: 6px;
-    --border-radius-half: 0;
+    --border-radius-half: 50%;
 
     --input-border-width: 2px;
     --textarea-padding: 16px;