I be doing to not be showing 100% of the page

A helping hand, please, I’m creating an application but it is not showing the whole screen as image. What can I be doing to not be showing 100% of the page?

My source:

    final Window mainWindow = new Window(CoreMobi.VERSAO);
    mainWindow.setWidth(CoreMobi.SIZE_W_TELA + 20, Sizeable.UNITS_PIXELS);
    mainWindow.setHeight(CoreMobi.SIZE_W_TELA, Sizeable.UNITS_PIXELS);

      GridLayout grid             = new GridLayout(1, 5);

CssLayout css = new CssLayout();
css.setWidth(CoreMobi.SIZE_W_TELA + 20, Sizeable.UNITS_PIXELS);
css.setHeight(CoreMobi.SIZE_H_TELA + 20, Sizeable.UNITS_PIXELS);

setComponentAlignment(css, Alignment.MIDDLE_CENTER);

Very thank you…

OK, I found the problem, had a sizer screen lost in the code, it was limited to screen… TKS.