Problem with set positions of components

Hello, i am newbie.

I learn vaadin a few days and i’m trying do a example application. Now i’m working on set my components to standard 2 columns layout. And i have problem and don’t know what i have to do.

im sending a photo:

and source code:

Second question: how can i create somethings vertical, or horizontal spacer items? For example, i need lower the positions of panels “menu” and “aktualnosci”.