# Use Youtube player (with Youtube AD) #<<<>>> # Use our player (Downlaod, Unblock & No Youtube AD) 再生できないときはここをクリック click here if failed to load 如无法播放请点击这里#

INFO:
Fitts's Law describes how long time it takes to click a target, based on the distance to the target and its size. Use this information to make buttons and links faster to click.
Using Fitts's Law to Make Links and Buttons Easier to Click (Video) - NN/g