diff --git a/design/window-frame-border.pen b/design/window-frame-border.pen
new file mode 100644
index 00000000..ebcc2d64
--- /dev/null
+++ b/design/window-frame-border.pen
@@ -0,0 +1 @@
+{"children":[],"variables":{}}
\ No newline at end of file
diff --git a/src/App.css b/src/App.css
index e9c59281..42b17ef3 100644
--- a/src/App.css
+++ b/src/App.css
@@ -5,6 +5,8 @@
   height: 100vh;
   width: 100vw;
   overflow: hidden;
+  border-radius: 10px;
+  box-shadow: inset 0 0 0 1px var(--border-primary);
 }
 
 .app {