Dropdown menus are difficult to implement well using html and css. Although a standards-based html/css dropdown menu will be somewhat accessible and visible to search engines, the standard menu functionality that users expect from their Mac and Windows interfaces is not possible to reproduce using web tools alone. Web dropdowns tend to be slower and less forgiving of errors in mouse positioning than menus on Mac or Windows operating systems. Older users and users with less hand-eye coordination usually hate web dropdown menus, especially because they are often implemented with small font sizes and small cursor target areas.