Add Codex Alpha version

src/components/Alert/alert.css

@@ -21,7 +21,7 @@
   background: rgba(var(--codex-alert-color), 0.2);
   border-radius: 75px;
   height: 1.75rem;
-  width: 1.75rem;
+  min-width: 1.75rem;
   display: flex;
   justify-content: center;
   align-items: center;

src/components/Menu/Menu.tsx

@@ -71,6 +71,7 @@ export function Menu({ expanded, onClose, onOpen, items, className }: Props) {
             <LogoInverse width={50} />
             <span className="menu-separator">|</span>
             <span className="menu-name">Codex</span>
+            <span className="menu-version">ALPHA</span>
           </div>
           {items.map((item, index) => renderItem(item, index))}
         </div>

src/components/Menu/menu.css

@@ -64,6 +64,15 @@
   width: 100%;
 }
 
+.menu-version {
+  font-size: 0.6rem;
+  background-color: var(--codex-background-light);
+  padding: 0 0.25rem;
+  border-radius: var(--codex-border-radius);
+  position: relative;
+  top: 1px;
+}
+
 @media (min-width: 1000px) {
   .menu {
     transform: translatex(0px);