Adding new functionality

assets/css/browser-phone-frontend.css

@@ -455,6 +455,16 @@
     transform: translateY(-1px);
 }
 
+.twp-btn-warning {
+    background: #ffc107;
+    color: #212529;
+}
+
+.twp-btn-warning:hover {
+    background: #e0a800;
+    transform: translateY(-1px);
+}
+
 .twp-btn-success {
     background: #007cba;
     color: white;