design nitpicks

src/App.tsx

src/components/Avatar.scss

src/components/ClientTile.scss

src/components/HomeserverOptions.tsx

src/components/Input.tsx

src/components/InviteTile.scss

src/components/InviteTile.tsx

src/components/RoomPreview.scss

src/components/RoomPreview.tsx

src/components/TextButton.scss

src/components/Toggle.scss

src/components/UserPreview.scss

src/components/UserPreview.tsx

src/pages/LinkRouter.tsx