# Why shapes cannot be zero width/height?

**URL:** <https://forum.kirupa.com/t/why-shapes-cannot-be-zero-width-height/288664>\
**Category:** Uncategorized\
**Created:** [May 19, 2009, 3:14pm UTC](https://forum.kirupa.com/t/why-shapes-cannot-be-zero-width-height/288664 "2009-05-19T15:14:47Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![regbolD](https://avatars.discourse-cdn.com/v4/letter/r/ecccb3/32.png) [@regbolD](https://forum.kirupa.com/u/regbolD)\
**Post date:** [May 19, 2009, 3:14pm UTC](https://forum.kirupa.com/t/why-shapes-cannot-be-zero-width-height/288664/1 "2009-05-19T15:14:47Z")

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I am trying to create a shape tween for a button rollover, basically a line which would go from 0 height to 30px height, but I cannot set its height to below 1 px, why is that?