add css override. closes #3

src/shims/loader.js

@@ -1,10 +1,12 @@
 import { installRequire } from "./require.js";
 import { installGlobals } from "./globals.js";
+import { installCssOverrides } from "./css-overrides.js";
 import { initialize } from "./init.js";
 import { fsShim } from "./fs/index.js";
 
 installGlobals(); // process, Buffer, window overrides (before require so Buffer is available)
 installRequire(); // shim registry, window.require
+installCssOverrides(); // browser-specific CSS fixes
 initialize(); // vault config, metadata cache, plugin prompt
 
 // Connect file watcher WebSocket after everything is initialized