To Sticky Header
Step 0 – Navigate to the Appearance section in the WordPress dashboard, then select Customize.
Step 1 – In the Customize menu, click on Header Options.
Step 2 – Within the Header Options, select Sticky Header.
Step 3 – Enable the Sticky Header option and configure any additional settings as needed. This could include the Background Color and appearance of the sticky header.
Step 4 – Once have made changes, click Publish to save them.