For some clients, web UI or interface design means colors, shapes, buttons, and menus, but it’s more than that; it’s about presenting in front of users with the required tools to achieve their needs. 
It connects the users with the experience they felt. As you have heard, the first impression is the last, which implies to websites also. It can make you feel like your childhood friend or just a casual friend, easy to forget. Great UI and UX Design Company  strick to perfect effortless interactivity like an invisible guide for users.