This makes the ribbon/menu bars unified into one instead of two separate bars to save screen real estate
Unified Bar for Outlook by AlyamanMas

Details
AuthorAlyamanMas
LicenseGPLv3
Categoryoutlook.office.com
Created
Updated
Code size337 B
Code checksumaab01a18
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Description
Notes
This doesn't work very well if the size of the window is small.
Source code
/* ==UserStyle==
@name Unified Bar
@version 20240725.14.45
@namespace ?
==/UserStyle== */
@-moz-document domain("outlook.office.com") {
#RibbonRoot > div {
display: flex;
width: 100%;
}
#RibbonRoot #TopBar {
width: 16rem;
}
#RibbonRoot #BottomBar {
width: 100%;
position: relative;
left: -1.7rem;
}
}