feat: fix a bunch of bugs.

client/src/components/NProgress/Spinner.js

@@ -0,0 +1,29 @@
+import * as React from 'react'
+
+const Spinner = () => (
+  <div
+    style={{
+      display: 'block',
+      position: 'fixed',
+      right: 15,
+      top: 15,
+      zIndex: 1031,
+    }}
+  >
+    <div
+      style={{
+        animation: '400ms linear infinite spinner',
+        borderBottom: '2px solid transparent',
+        borderLeft: '2px solid #29d',
+        borderRadius: '50%',
+        borderRight: '2px solid transparent',
+        borderTop: '2px solid #29d',
+        boxSizing: 'border-box',
+        height: 18,
+        width: 18,
+      }}
+    />
+  </div>
+)
+
+export default Spinner;