Background Pattern is missing

You need to apply css to make this changes. Alternatively you can create a CMA template https://creativeminds.helpscoutdocs.com/article/197-cmac-getting-started-inserting-shortcode-to-the-theme-template

How can i apply css? Is there any example?

You can add it to your theme css file or use a custom css plugin. Here some ore information https://creativeminds.helpscoutdocs.com/article/30-theme-adjusting-plugin-css

Thanks,i fix it.