CSS property: -webkit-transition-duration
    Description
Defines how long the transition from the old value to the new value should take.
Syntax
-webkit-transition-duration: <time> [, ...];
Values
- <time>
- If - 0, the transition is immediate (there is no animation). A negative value is treated as- 0. Nonzero values must specify a unit:- sfor seconds,- msfor milliseconds. Negative values are invalid. The default value is- 0.