In the Style Settings section, click Progress Bar.
You can disable the progress bar by simply clicking the Enabled button.
Tip: Advanced users can set up a CSS file for their website by clicking the Use your own custom CSS link.
Click the button beside the style of progress bar you prefer. It will appear in the Preview pane at the bottom of the page. You can only change the style of the active step in the progress bar. The inactive steps remain grayed out.