# Post #3240 header and the preview margin

**URL:** <https://community.wpbeaverbuilder.com/t/post-3240-header-and-the-preview-margin/15701>\
**Category:** Developers\
**Created:** [March 14, 2022, 3:05pm UTC](https://community.wpbeaverbuilder.com/t/post-3240-header-and-the-preview-margin/15701 "2022-03-14T15:05:56Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Tuomas](https://community.wpbeaverbuilder.com/letter_avatar_proxy/v4/letter/t/5f9b8f/32.png) [@Tuomas](https://community.wpbeaverbuilder.com/u/Tuomas)\
**Post date:** [March 14, 2022, 3:05pm UTC](https://community.wpbeaverbuilder.com/t/post-3240-header-and-the-preview-margin/15701/1 "2022-03-14T15:05:56Z")

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Hello fox! Does anyone know how to hide the header Post #3240 that is automatically generated on my site? I’m using the free version Beaver Builder. The plugin is asking for a css-selector to do it. fl-post-header in global settings doesn’t help.  
In the preview, a margin of three centimeters is left on both sides, even if the default row contents are set to the full screen width. Pages I have created with other editors display correctly.