diff --git a/app/css/app.css b/app/css/app.css
index 6a084f9..bd44a1f 100644
--- a/app/css/app.css
+++ b/app/css/app.css
@@ -43,7 +43,7 @@ html, body {
}
/* Style buttons */
-.btn {
+.bpmn-js-spiffworkflow-btn {
background-color: DodgerBlue;
border: none;
color: white;
@@ -54,6 +54,6 @@ html, body {
}
/* Darker background on mouse-over */
-.btn:hover {
+.bpmn-js-spiffworkflow-btn:hover {
background-color: RoyalBlue;
}
diff --git a/app/index.html b/app/index.html
index eed604b..86d722f 100644
--- a/app/index.html
+++ b/app/index.html
@@ -15,8 +15,8 @@