#### Z axis point of observation

# perspective

Specify the distance from the user's point of observation to the Z axis when performing a transform.

## Property values

Specify this property on the container

The distance from the z-plane to the observer's point of reference is specified using one of these units:

em | em | The `font-size` of the current font |

rem | relative em | The `font-size` of the <html> element |

in | inch | A size equal 96px |

px | pixels | A size equal to 1/96 inch |

pt | point | A size equal 1in/72 = 1.33px |

pc | pica | A size equal 1in/6 = 12pt = 16px |

cm | centimeter | A size equal to 96px/2.54 = 37.8px |

mm | millimeter | A size equal to 96px/25.4 = 3.8px |

Q | quarter millimeter | A size equal to 96px/1016 = 0.94px |

Smaller values put the observer closer to the object, shortening the vanishing point, giving it less of a 3D effect.

Larger values put the observer farther away from the object, lengthening the vanishing point, giving it more of a 3D effect.