@import "../../style/mixins/index"; .antTreeSwitcherIcon() { position: relative; &:after { .iconfont-size-under-12px(6px); content: '\e611'; display: inline-block; font-family: 'anticon'; font-weight: bold; position: absolute; top: 0; right: 4px; color: #666; transition: transform .3s ease; } }