The offcanvas content could be pushed down by adding a top margin (not padding) using custom CSS. However, that is not recommended because your logo could not be clicked or clicking it will only close the canvas because the off canvas still covers it.
If you wish to proceed with that, you would need to add this code in the Element CSS of the Navigation Collapsed. Set the margin the same as your header height.
$el .x-off-canvas-content {
margin-top: 70px;
}
After that, set the close button of canvas to transparent. Otherwise, you’ll get this:
Alternatively, you can use the Navigation Collapsed instead. But just want to add ahead that it’s not recommended for the Navigation Dropdown to have submenus in mobile.
Thanks.