# Description

A s, or second, is a CSS time measurement.

The format of this time value is a number followed by ‘s’.

# Examples

This example defines a transition on the opacity property that smoothly transitions over 2 seconds:

    div {
      transition-property:
        opacity;
      transition-duration:
        2s;
    }

# Browser Support

Firefox | IE | Chrome | Opera | Safari

# Miscellaneous Information

Defined In: | CSS3