Sticky Header – This feature keeps the Menu locked to the top of the page at all times.
Go to Flotheme – Header – Desktop Header Options (or in some themes Flotheme – Header – Desktop Header). Find the area that says Sticky Menu and enable this option. Please note, that after enabling Sticky Header, some themes may unfold other options such as Sticky Header Opacity or Color change. If you want to modify the colors, click on Use a different color and select a color using the color picker, or manually type in the color hex code into the designated field.