Added back hidden overflow on root container

src/assets/stylesheets/main/layout/_base.scss

@@ -27,6 +27,7 @@
 // Stretch container to viewport and set base `font-size`
 html {
   height: 100%;
+  overflow-x: hidden;
   // Hack: normally, we would set the base `font-size` to `62.5%`, so we can
   // base all calculations on `10px`, but Chromium and Chrome define a minimal
   // `font-size` of `12px` if the system language is set to Chinese. For this