@select-prefix: ~'rc-cascader'; .@{select-prefix} { &-dropdown { min-height: auto; } &-menus { display: flex; flex-wrap: nowrap; } &-menu { flex: none; margin: 0; padding: 0; list-style: none; border-left: 1px solid blue; height: 180px; min-width: 100px; overflow: auto; &:first-child { border-left: 0; } &-item { display: flex; flex-wrap: nowrap; padding-right: 20px; position: relative; &-selected { background: rgba(0, 0, 255, 0.05); } &-active { background: rgba(0, 255, 0, 0.1); } &-disabled { opacity: 0.5; } &-content { flex: auto; } &-expand-icon { position: absolute; right: 4px; top: 50%; transform: translateY(-50%); } } } &-checkbox { position: relative; display: block; flex: none; width: 20px; height: 20px; border: 1px solid blue; &::after { position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); content: ''; } &-checked::after { content: '✔️'; } &-indeterminate::after { content: '➖'; } } // ====================== RTL ====================== &-rtl { direction: rtl; .@{select-prefix}-menu { flex: none; margin: 0; padding: 0; list-style: none; border-left: none; border-right: 1px solid blue; &:first-child { border-right: 0; } } } }