diff --git a/css/skeleton.css b/css/skeleton.css
index f28bf6c..762b374 100644
--- a/css/skeleton.css
+++ b/css/skeleton.css
@@ -184,7 +184,7 @@ input[type="button"] {
   white-space: nowrap;
   background-color: transparent;
   border-radius: 4px;
-  border: 1px solid #bbb;
+  border: 1px solid #BBB;
   cursor: pointer;
   box-sizing: border-box; }
 .button:hover,