TestDome hiding candidate names/emails userContent.css file for Firefox

userContent.css

/*
Follow the instructions here to install:
https://davidwalsh.name/firefox-user-stylesheet

Then restart Firefox
*/
/*
Follow the instructions here to install:
https://davidwalsh.name/firefox-user-stylesheet
Then restart Firefox
*/

@-moz-document domain(www.testdome.com) {
    #NotCompleted {
    }
    #ArchivedCandidates .text-left {
            background-color: #000 !important;
    }


    /*My Candidates top page*/
    input#NameOrEmail {
        display: none !important; /* name/email search */
    }
    /*name, email first 2 columns */
    #Candidates  tr td:nth-child(-n+2),
    /* 3 columns because there's a checkbox in the test candidate list */
    #Passed  tr td:nth-child(-n+3),
    #NotCompleted  tr td:nth-child(-n+3),
    #Failed  tr td:nth-child(-n+3)
    {
        width: 5px !important;
        overflow: hidden !important;
        background-color: blue;
        color: blue !important;
    }

    #Candidates abbr,
    #Passed  abbr,
    #NotCompleted  abbr,
    #Failed abbr {
        /* email communication which includes email on hover */
        display: none;
    }

    #Candidates td strong a,
    #Candidates td strong a:visited,
    #Candidates td strong a:hover
    {
        background-color: #525252 !important;
        color: #525252 !important;
    }

    /*candidate page*/
    body.small-margin div.container h1 {
        /*candidate name*/
        background-color: #525252 !important;
    }

    body.small-margin div.container h1 + a,
    body.small-margin div.container h1 + a:visited,
    body.small-margin div.container h1 + a:hover
    {
        background-color: #525252 !important;
        color: #525252 !important;
    }

}


@-moz-document domain(app.greenhouse.io) {
    /* Candidates list page */
    table.person td.person-info-column .name a,

    /* Individual candidate page */
    h1.person-name,
    a.email-candidate-icon,
    #open_candidate_email_modal,
    #application_table div.status-row .status-container .submission-label .status,
    #eeoc_request_container .description.submitted,
    #application_table .answer a,
    #candidate_details_tab .contact-info-item a,

    /* Interview kit page */
    table#interview_kit td.sidebar .name a,
    .sidebar .email,

    /* Application review page */
    .person-application-details .applicant-header h2 a,
    #attachments .attachment-url,
    .q-and-a a
    {
        color: black;
        background-color: black;
    }
}

I couldn't get this working in Firefox 73.0, even after deleting and re-creating the file in a few different places a few different times with different permissions and toggling the new developer mode option toolkit.legacyUserProfileCustomizations.stylesheets per https://www.ghacks.net/2019/05/24/firefox-69-userchrome-css-and-usercontent-css-disabled-by-default/ . So I'm using the CSS in the Stylus browser extension, which also lets me toggle it on and off at will.