I am new to Solidworks and one problem I keep running into is that when I sketch a simple 2D drawing, particularly a rectangle, the face is blue or gray and it says it is under defined. This happens regardless whether I sketch it using lines or the rectangle tool button. I have been following a Youtube tutorial, doing the exact same steps as they show, but their 2D drawing is white and mine is not. I have tried to fix this problem using the "anchor" icon but I found that prevents me from using smart dimensions. I attached a picture of what my box looks like (the blue rectangle) versus what I want it to look like (the white rectangle). Any help is appreciated, thank you