how to make pictures "move" when u hover over them???

Move like shaking? Move up and down? I know how to do it, but depending what type of moving you want, I have different methods for them. Is it like what I have on my profile?

the way i'd do it is having a style tag with 

<style>

nav:hover {

translate 20px 10px;

}

</style>

where the 20px moves it right 20 and 10px moves it up by 10 on hover (replace nav with the selector of what you want to move)

replace one of the numbers with 0 if you want it to only go in one direction

to smooth it out there's the animate tag and everything but that's the basic method iirc