camunda-bpmn-js/dist/assets/element-template-chooser.css

Embeddable Camunda modeling distributions based on bpmn-js

.djs-popup.element-template-chooser {
  top: calc((100vh - 350px) / 3) !important;
  left: 50% !important;
  transform: translateX(-50%) scale(1) !important;
}