Outlook.com: Remove "external sender" nonsense by thomasjo

/* ==UserStyle==
@name         Outlook.com: Remove "external sender" nonsense
@version      20211123.13.23
@namespace    userstyles.world/user/thomasjo
@description  This user style removes the useless and extremely annoying "external sender" banner that is injected into all e-mails originating from external domains.

Note that this is not well-tested, and might break in all kinds of surprising and fantastic ways.
@author       thomasjo
@license      No License
==/UserStyle== */

@-moz-document domain("outlook.office.com") {
div.x_clean-body > p {
  display: none;
}
}