https://brightspace.dk/ by Fallkos

/* ==UserStyle==
@name         brightspace.com
@version      20211006.19.56
@namespace    userstyles.world/user/sander0542
@description  Full width PDF viewer for Brightspace
@author       sander0542
@license      No License
==/UserStyle== */
@-moz-document domain("https://brightspace.au.dk/d2l/home") {
    #app #root-wrapper {
        max-width: none !important;
        padding-top: 0 !important;
    }

    #app #root-wrapper .content-panel-header {
        display: none !important;
    }

    #app #root-wrapper .error-alert-container {
        margin-top: 0 !important;
    }

    #app #root-wrapper .content-panel {
        padding: 0 !important;
    }

    #app #root-wrapper .navigation-container .navigation-menu {
        overflow-y: auto !important;
    }
}