CSS template for removing menu selectors;Firefox Ver. 61.0.2

/*Please note that names of selectors are case sensitive, please note that some context menu items use an underscore instead of a dash.

In order to remove context menu items start the userChrome CSS file with the @namespace line of code and then follow that with the names of the context menu items with commas between each item; this includes context menu selectors that have a comment block between itself and the next context menu selector. At the end of the list of context menu selectors end with this:      {display: none !important;}
*/

@namespace url("http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul");
/*Removes Items from Tab Context Menu*/
#context_reloadTab,
#context_toggleMuteTab,
#context_pinTab,
#context_unpinTab,
#context_duplicateTab,
#context_openTabInWindow,
#context_sendTabToDevice_separator,
#context_sendTabToDevice,
#context_reloadAllTabs,
#context_bookmarkAllTabs,
#context_closeTabsToTheEnd,
#context_closeOtherTabs,
#context_undoCloseTab,
#context_closeTab,

/*----- Removes Separators from the Tab Context Menu. Keep in mind that for each separator below there are multiple selector ID's that I was able to identify that work. You only need to choose one in order to remove the specified separator.

1st separator*/
menuitem[label="Mute Tab"] + menuseparator,
#context_toggleMuteTab+menuseparator,

/*2nd separator*/
menuitem[label="Move to New Window"] + menuseparator,
#context_openTabInWindow+menuseparator,

/*3rd separator*/
#context_sendTabToDevice_separator,
#context_sendTabToDevice+menuseparator,

/*4th separator*/
menuitem[label="Close Other Tabs"] + menuseparator,
#context_closeOtherTabs+menuseparator,

/*5th separator*/
menuitem[label="Close Tab"] + menuseparator,
#context_closeTab+menuseparator,

/*Removes Items from Right Click Context Menu; Diagram here: https://imgur.com/b5gEfUy */
#context-back,
#context-forward,
#context-reload,
#context-stop,
#context-bookmarkpage,
#context-navigation,
#context-sep-navigation,
#context-savepage,
#context-pocket,
#context-sep-sendpagetodevice,
#context-sendpagetodevice,
#context-sep-viewbgimage,
#context-viewbgimage,
#context-selectall,
#context-sep-selectall,
#context-sep-viewsource,
#context-viewsource,
#context-viewinfo,
#inspect-separator,
#context-inspect,
#contentAreaContextMenu > menuseparator:nth-child(92),
#screenshots_mozilla_org_create-screenshot,

/*Removes Items from Right Click on Selected Links Context Menu; Diagram here: https://imgur.com/e9AaMx3 */
#context-openlinkintab,
#context-openlinkinusercontext-menu,
#context-openlink,
#context-openlinkprivate,
#context-sep-open,
#context-bookmarklink,
#context-savelink,
#context-savelinktopocket,
#context-copylink,
#context-copy,
#context-sep-selectall,
#context-searchselect,
#context-sep-sendlinktodevice,
#context-sendlinktodevice,
#context-viewpartialsource-selection,
#inspect-separator,
#context-inspect,
#contentAreaContextMenu > menuseparator:nth-child(92) /*This is a Separator*/
{display: none !important;}