fix: Add rollup css config

Author: meucamille

rollup.config.js

@@ -4,6 +4,7 @@ import typescript from "@rollup/plugin-typescript";
 import del from 'rollup-plugin-delete';
 import svgr from '@svgr/rollup';
 import commonjs from '@rollup/plugin-commonjs'
+import css from "rollup-plugin-import-css";
 
 // eslint-disable-next-line import/no-anonymous-default-export
 export default [
@@ -36,7 +37,8 @@ export default [
                     'node_modules/rc-util/node_modules/react-is/index.js': ['isFragment', 'useMemo', 'isMemo'],
                     'node_modules/react-is/index.js': ['isFragment', 'useMemo', 'isMemo']
                 }
-            })
+            }),
+            css()
         ],
         external: ['lodash']
     },