fix css w masowej aktualizacji firmware

templates/devices.html

@@ -3,17 +3,20 @@
 
 {% block extra_head %}
   <style>
-    .progress-container {
-      width: 100%;
-      height: 30px;
-      background-color: #ccc;
+    #system-update-overlay h3, #reboot-progress-overlay h3 {
+      margin-bottom: 20px;
+    }
+    .progress-container {
+      width: 50%;
+      margin: 20px auto;
+      background: #444;
+      border-radius: 5px;
     }
-
     .progress-bar {
-      height: 100%;
       width: 0%;
-      background-color: #28a745;
-      transition: width 1s linear;
+      height: 30px;
+      background: #4caf50;
+      border-radius: 5px;
     }
   </style>
 {% endblock %}