feat: use flexbox to center the floating title (#1959)

* use flexbox to center the floating title

* simplify breadcumb alignment

* small adjustments

* fix alignment on actions

app/components/Sidebar/components/Toggle.js

@@ -28,7 +28,7 @@ export const ToggleButton = styled.button`
   transition: opacity 100ms ease-in-out;
   transform: translateY(-50%)
     scaleX(${(props) => (props.$direction === "left" ? 1 : -1)});
-  position: absolute;
+  position: fixed;
   top: 50vh;
   padding: 8px;
   border: 0;