If the picture sent from your Computer Kit to your screen doesn't quite fit, or there are bits cut off, there's a really easy way to adjust it!
First, enter into the Settings by clicking on the gear icon.
Then click on Display.
In Display, you have the option to change your screen resolution to better fit the screen that you are using with your Computer Kit. If you just want to make a small adjustment, click Overscan.
Move the slider and the image on your screen will start to shrink.
If you want to make more detailed adjustments to the screen size, click Advanced to control every side individually. When you're happy with the picture, click Apply Changes.
Once you have finished adjusting the screen resolution and/or the overscan, simply click the X in the top right of the window. You must reboot your Computer Kit for the screen size changes to take effect.