I am trying to learn to make web based application interfaces. Like, say, a web form that manages a stateful process. The user provides info to a form, initiate

I am trying to learn to make web based application interfaces. Like, say, a web form that manages a stateful process. The user provides info to a form, initiates a set of actions, and then monitors the results and provides further input. I am definitely not a designer. Mostly I just want a design that looks decent and stays out of the way. I have tried widget libraries but I have been happier with the results I am getting from plain old css.