Remove fixed headers by lightsaber

/* ==UserStyle==
@name         Remove fixed headers
@version      20231213.11.53
@namespace    userstyles.world/user/lightsaber
@description  Remove fixed-headers from various sites
@author       lightsaber
@license      GNU GPL 3 or later
==/UserStyle== */
@-moz-document domain("stackoverflow.com"),
domain("stackexchange.com"),
domain("askubuntu.com") {
    .s-topbar {
        position: absolute !important;
    }
}

@-moz-document domain("realpython.com") {
    nav {
        position: absolute !important;
    }
}

@-moz-document domain("geeksforgeeks.org") {
    div.header-main__slider {
        position: relative !important;
    }
}

@-moz-document domain("linkedin.com") {
    header#global-nav {
        position: absolute !important;
    }
}

@-moz-document domain("spacy.io") {
    .navigation_root__yPL8O {
        position: absolute;
    }
}