@import "../../index"; @val: transform .3s ease; .bi-multilayer-select-tree-combo { & .trigger-icon-button{ font-size: 16px; } // 此combo的trigger_button是absolute上去的,与bi-combo在同一层级,独立写一下 & .bi-combo.bi-combo-popup + .bi-trigger-icon-button { & .x-icon { .rotate(180deg); .transition(@val); } } & .bi-combo + .bi-trigger-icon-button { & .x-icon { .rotate(0deg); .transition(@val); } } }