wip(Layout): Layout developing

src/utils/index.ts

@@ -34,3 +34,7 @@ export function underlineToHump(str: string): string {
     return letter.toUpperCase()
   })
 }
+
+export function setCssVar(prop: string, val: any, dom = document.documentElement) {
+  dom.style.setProperty(prop, val)
+}