Here is an informative chart showing and explaining all dimension and location attributes of HTML elements. You will find this chart very handy while positioning or adjusting location of html element using javascript or through stylesheet.

Measuring Element Dimension and Location

If anyone asks me which keystroke combination I used most while computing, I would unhesitatingly say its Alt-SpaceBar (yes! it’s not even Alt-F4 for closing window).

I am not sure if this key combination is generally used by most users, but I love this combination as it allows me to close, minimize, maximize or even restore any window using keyboard and therefore I have another reason of not using mouse. Now I can always keep my hand on keyboard even if I need to do some activities which can only possible using mouse and I no more require to shift my hand from keyboard to mouse and then again from mouse to keyboard just to minimize or maximize window.

Here is the Alt-SpaceBar keystroke combination list:
Alt-SpaceBar + c – Closing Window
Alt-SpaceBar + n – Minimizing Window
Alt-SpaceBar + x – Maximizing Window
Alt-SpaceBar + Enter – Restore Window

Like for closing a window, simply press Alt and SpaceBar which will open a control popup menu and then press c. You will feel more comforting in pressing these keys as they are more closer to you as compare to F4 which is that top of the keyboard.

It might seem bit awkward and complex key combination first few times (as I was feeling at initial stage) but with regular use, I am sure you will also love this key stroke combination.