See the attached screenshot. The input field is shorter than the surrounding wrapper. Either the input field should be widened to fit the wrapper or wrapper should be shortened. The first one is better.
Also it's always a good idea to highlight an input field when focused. Otherwise, there is no visual aid.
Also, when this "Create table" window is resized down to the minimum size, the "Table Name" field is overlapping with the window. The size of the main window should not be less than the widest of its fields.