# Ajout d'un en-tête dans le thème qui perturbe la barre de progression du sujet (lorsqu'il est ancré) **URL:** \ **Category:** Product Support\ **Created:** [Septembre 17, 2018, 6:44 UTC](https://meta.discourse.org/t/adding-header-in-theme-messes-up-topic-progress-bar-when-docked/97393 "2018-09-17T18:44:58Z")\ **Posts on this page:** 1\ **Showing post:** 1
**Author:** ![Lew\_Grothe](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/lew_grothe/32/337776_2.png) [@Lew\_Grothe](https://meta.discourse.org/u/Lew_Grothe)\ **Post date:** [Septembre 17, 2018, 6:44 UTC](https://meta.discourse.org/t/adding-header-in-theme-messes-up-topic-progress-bar-when-docked/97393/1 "2018-09-17T18:44:58Z")
When we added a header in our theme, on mobile, the toggle where the #topic-progress-wrapper div position is toggled from fixed to absolute, the bottom property is set wrong (doesn’t include the header when calculating the body length). A little inspection and a [posting](https://meta.discourse.org/t/weird-behavior-of-the-topic-progress-with-a-body-customisation/45258) from @Steven from 2016 provided enough of a solution but I hate leaving CSS cruft like this in our theme. Seems like wherever the bottom property is calculated dynamically should be able to figure out the correct body length (including header)? I hate to file this as a bug if I’m just missing something… --- _[View the full topic](https://meta.discourse.org/t/adding-header-in-theme-messes-up-topic-progress-bar-when-docked/97393)._