Experimental

    /*New Style VERY EXPERIMENTAL*/
    @namespace html url(http://www.w3.org/1999/xhtml);
    @namespace xul url(http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul);

    /* ----My janky code to fix random stuff---- */
    /*remove internal border*/
    #main-window:not([chromehidden*="toolbar"])[sizemode="normal"]
    {
     margin-top:-2px!important;
     margin-left:-1px!important;
     margin-right:-1px!important;
     margin-bottom: 18px /*Originally 2*/ !important;
     }

    :root {
        /*COLOR STUFF*/
        --bg-light: #ffffff; --bg-dark: #453841;
        --fg-light: #4c4c4c; --fg-dark: #7f7f7f;

       /* URL VARIABLES */
        --url-background: var(--bg-light); --url-color: var(--fg-dark);
        --url-height: 19px; --url-right-margin: 7px;
        --url-fonts: "Open Sans"; --url-font-size: 9pt;
        --url-text-align: center; /* left | center | right */
        --url-position: fixed; /* absolute == top (under tabs) || fixed == bottom of browser */
    }


    @-moz-document url(chrome://browser/content/browser.xul) {
        /* URL-BAR */
        #PanelUI-button, #bookmarks-menu-button, #downloads-button, #home-button, #stylish-toolbar-button, #abp-toolbarbutton,
        #back-button, #forward-button, #identity-box, #urlbar-reload-button, #urlbar-stop-button, #urlbar-go-button, #notification-popup-box,
        #new-tab-button, #alltabs-button, #private-browsing-indicator, #search-container { display: none !important; }
        .tab-drop-indicator { margin-bottom: 0 !important; }

        #nav-bar {
            position: var(--url-position) !important; bottom: 0 !important;
            width: 100% !important; height: var(--url-height) !important; min-height: var(--url-height) !important; max-height: var(--url-height) !important;
            margin: 0 0 0 0 !important;

        }
           #nav-bar-customization-target { width: 100% !important; }
              #urlbar-wrapper {
                  width: 100% !important; margin-top: -1px !important; /* adjust margin-top to ~ -5px if you experience gap */
                  position: absolute !important; top: 0 !important; left: 0 !important;
                  border-bottom: 0px solid var(--bg-light) !important;
              }
                 #urlbar {
                     box-shadow: 0 0 0 1px rgba(233,233,233,1) !important;
                     border: none !important; border-radius: 0 !important;
                     margin: 0 0 0 0 !important; padding: 0 2px 0 9px !important;
                     height: var(--url-height) !important; min-height: var(--url-height) !important;
                     background: var(--url-background) !important; color: var(--url-color) !important;
                     font-family: var(--url-fonts) !important; font-size: var(--url-font-size) !important;
                     width: calc(100% + var(--url-right-margin)) !important; text-align: var(--url-text-align) !important;
                 }

        #TabsToolbar::after { display: none !important; }
        .tabbrowser-tab::before, .tabbrowser-tab::after { background: none !important; }

        #navigator-toolbox::after { height: 1px /*Originally was 2px*/ !important; background: #e9e9e9 !important; }
        #liberator-bottombar { border-top: 0px solid var(--bg-light) !important; }

    /*TABS*/
        #TabsToolbar {
        background: rgba(249,249,249,1) !important;
        margin-bottom: 0px !important;
        height: 21px !important;
        font-family: "Open Sans" !important;
    }


    #TabsToolbar .tabbrowser-tabs {
        min-height: 24px !important;
        margin-top: -1px !important;
        text-align: center !important;
        margin-left: -15px !important;
        margin-right: -15px !important;
        font-family: Open Sans !important;
    }

    #tabbrowser-tabs tab .tab-close-button {
        display: none !important;
    }

    .tabbrowser-tab:not([pinned]) .tab-icon-image {
    display: none !important;
    }

    .tab-icon-image {
        height: 14px !important;
        width: 14px !important;
    }

    #TabsToolbar .tabbrowser-tab {
        -moz-border-top-colors: none !important;
        -moz-border-left-colors: none !important;
        -moz-border-right-colors: none !important;
        -moz-border-bottom-colors: none !important;
        border-width: 1px 1px 1px 1px !important;
        text-shadow: 0 0 4px rgba(80,80,80,0) !important;
        padding: 4px 0px !important;
        border-radius: 0px !important;
        background: rgba(249,249,249,1) !important;
        background-clip: padding-box !important;
        transition: all .1s !important;
        margin-left: 0px !important;
        color: #7f7f7f !important;
        font-family: 'Open Sans' !important;
        font-size: 10px !important;
        min-height: 21px !important;
    }

    #TabsToolbar .tabs-newtab-button {
        -moz-border-top-colors: none !important;
        -moz-border-left-colors: none !important;
        -moz-border-right-colors: none !important;
        -moz-border-bottom-colors: none !important;
        border-style: solid !important;
        border-color: rgb(241,241,241) !important;
        border-width: 1px 1px 0 1px !important;
        text-shadow: 0 0 4px rgba(0,0,0,0) !important;
        background: transparent !important;
        background-clip: padding-box !important;
        transition: all .1s !important;
    }




    #TabsToolbar .tabbrowser-tab[selected] {
        color: rgba(31,31,31,1) !important;
        background: rgba(255,255,255,1) !important;
        background-clip: padding-box !important;
        border-bottom: 0px !important;
        border-color: rgba(233,233,233,1) !important;
        margin-bottom: 0px !important;
        height: 21px !important;
    }


        #TabsToolbar .tabbrowser-tab:not([selected]) {
        border-style: none !important;
    }


    #TabsToolbar .tabs-newtab-button:hover,
    #TabsToolbar .tabbrowser-tab:hover:not([selected]) {
        color: rgba(31,31,31,1) !important;
        border-color: rgba(233,233,233,1) !important;
        background-color: rgba(255,255,255,1) !important;
    }

    #TabsToolbar .tab-background {
        margin: 0 !important;
        background: transparent !important;
    }

    #TabsToolbar .tab-background-start,
    #TabsToolbar .tab-background-end {
        display: none !important;
    }

    #TabsToolbar .tab-background-middle {
        margin: -4px -2px !important;
        background: transparent !important;
    }

    #TabsToolbar .tabbrowser-tab:after,
    #TabsToolbar .tabbrowser-tab:before {
        display: none !important;
    }

    #TabsToolbar .tabs-newtab-button {
        border-width: 1px 1px 0 1px !important;
        margin: 0 !important;
        width: auto !important;
        padding: 0 5px !important;
    }
    }

    /*----- Fix for white flash on new tab -----*/
    tabbrowser tabpanels, #appcontent > #content { background: var(--bg-light) !important; }