dify-1.72/web/app/components/explore/universal-chat/config-view/detail/style.module.css

.btn {
  background: url(~@/app/components/datasets/documents/assets/action.svg) center center no-repeat transparent;
  background-size: 16px 16px;
  /* mask-image: ; */
}

.panelBorder {
  border: 0.5px solid rgba(0, 0, 0, .05);
}