Bosy not showing in the project

Hi,
i am adding text to my projects body but it is not displaying. Can you please point out a solution to this problem. This link is for your reference.

Hello there,

The text doesn’t appear because white background remains surrounding the main content. Try adding this CSS code to Appearance > Customize > Additional CSS from dashboard.

    .single .type-jetpack-portfolio {
      background-color: transparent;
    }

to enable transparent background.

Regards,
Kharis