--- /dev/null
+{#
+/**
+ * @file
+ * Theme override for a progress bar.
+ *
+ * Note that the core Batch API uses this only for non-JavaScript batch jobs.
+ *
+ * Available variables:
+ * - label: The label of the working task.
+ * - percent: The percentage of the progress.
+ * - message: A string containing information to be displayed.
+ */
+#}
+<div class="progress" data-drupal-progress>
+ {% if label %}
+ <div class="progress__label">{{ label }}</div>
+ {% endif %}
+ <div class="progress__track"><div class="progress__bar" style="width: {{ percent }}%"></div></div>
+ <div class="progress__percentage">{{ percent }}%</div>
+ <div class="progress__description">{{ message }}</div>
+</div>