Fix 'Logout' inline link on the splash screen (#8770)

Signed-off-by: Suguru Hirahara <luixxiul@users.noreply.github.com>

src/components/structures/MatrixChat.tsx

@@ -2012,10 +2012,12 @@ export default class MatrixChat extends React.PureComponent<IProps, IState> {
                     <div className="mx_MatrixChat_splash">
                         { errorBox }
                         <Spinner />
-                        <AccessibleButton kind='link_inline' className="mx_MatrixChat_splashButtons" onClick={this.onLogoutClick}>
+                        <div className="mx_MatrixChat_splashButtons">
+                            <AccessibleButton kind='link_inline' onClick={this.onLogoutClick}>
                                 { _t('Logout') }
                             </AccessibleButton>
                         </div>
+                    </div>
                 );
             }
         } else if (this.state.view === Views.WELCOME) {