diff --git a/ng2-components/ng2-activiti-processlist/src/components/activiti-process-instance-tasks.component.css b/ng2-components/ng2-activiti-processlist/src/components/activiti-process-instance-tasks.component.css
index cf4ad69b77..57820a754f 100644
--- a/ng2-components/ng2-activiti-processlist/src/components/activiti-process-instance-tasks.component.css
+++ b/ng2-components/ng2-activiti-processlist/src/components/activiti-process-instance-tasks.component.css
@@ -22,6 +22,9 @@
 }
 
 .task-details-dialog {
+    position: fixed;
+    top: 50%;
+    transform: translate(0, -50%);
     width: 40%;
 }