Please import your divi layout lindahaf_layout.json in the downloaded folder. Create a new page, use the Divi Builder and click on the two arrows in purple bow. Choose the import option. Select the file from your downloaded folder and save it.
You can also copy the css text into Divi – Theme Options – Custom CSS.
You can also import the Theme Customizer settings. Go to Appearence – Customize and click on two arrows in the left- hand upper corner. Choose import and select the file from your downloaded folder.