contrast button borders

web/templates/header.html

@@ -227,7 +227,7 @@
                 cursor: pointer;
                 color: #333;
                 background-color: #fafafa;
-                border: 1px solid #c3c3c3;
+                border: 1px solid #999;
                 border-radius: 3px 3px 3px 3px;
                 padding: 0;
                 font-size: 12px;
@@ -715,7 +715,7 @@
                 cursor: pointer;
                 color: #202020;
                 background-color: #fafafa;
-                border: 1px solid #c0c0c0;
+                border: 1px solid #999;
                 border-radius: 3px 3px 3px 3px;
                 font-size: 14px;
                 padding: 2px 16px;