diff --git a/README.md b/README.md
index 7a0d5374..c79d21a0 100644
--- a/README.md
+++ b/README.md
@@ -55,6 +55,7 @@ Since we are only using flexbox, we can use defaults that are much more sensible
 div {
   box-sizing: border-box;
   position: relative;
+  border: 0 solid black;
   margin: 0;
   padding: 0;