@arco-vue-pro-components/pro-components/lib/pro-select/style/index.css

基于@arco-design/web-vue组件的高级组件，包括pro-table

.am-vue-pro-select-option {
  width: 100%;
  text-overflow: ellipsis;
  overflow: hidden;
  word-break: break-all;
  white-space: nowrap;
}