diff --git a/css/frama.css b/css/frama.css
index be2db00..bf0a0cb 100644
--- a/css/frama.css
+++ b/css/frama.css
@@ -210,6 +210,7 @@ fieldset[disabled] .btn-primary.active {
     color: #fff;
     background-color: #849551;
     border-color: #748544;
+    text-shadow: 0px 0px 3px rgba(0, 0, 0, 0.7);
 }
 .btn-success:hover,
 .btn-success:focus,