whatsapp styles hidden contancts

@-moz-document domain("web.whatsapp.com") {
    /* Insert code here... */
    ._aigv._aigw {
        filter: blur(5px);
    }
    span._ahxt.x1ypdohk.xt0b8zv._ao3e, /* chat sender name */
    span._ahxt._ao3e, /* chat replay */
    span.x1iyjqo2.x6ikm8r.x10wlt62.x1n2onr6.xlyipyv.xuxw1ft.x1rg5ohu._ao3e, /* chat heading - group name */
    span.x1iyjqo2.x6ikm8r.x10wlt62.xlyipyv.xuxw1ft._ao3e.selectable-text.copyable-text, /* chat heading - group members */
    ._ak8l /* chat list on sidebar */
    {
        filter: blur(3px);
    }
}