#tabbrowser-tabbox {
    #zen-sidebar-web-panel-wrapper {
        margin: 10px !important;

@media (-moz-bool-pref: "zen.view.compact.hide-tabbar") {
            margin-left: 16px !important;
        }

#zen-sidebar-web-panel {
            box-shadow: none !important;
            min-width: 300px !important; 
            max-width: 100% !important; 
            position: relative;
            overflow: auto;
            resize: both;
            background: var(--uc-custom-zen-sidebar-panel-color-background, #21212180) !important;
            backdrop-filter: blur(var(--uc-custom-zen-sidebar-panel-blur, 3px)) !important;
            border-radius: var(--uc-custom-zen-sidebar-panel-border-radius, 15px) !important;
            box-shadow: 0 var(--uc-custom-zen-sidebar-panel-shadow-position, 0px) var(--uc-custom-zen-sidebar-panel-shadow-strength, 5px) var(--uc-custom-zen-sidebar-panel-color-shadow, #3d3d3d1a)  !important;
            browser {opacity: var(--uc-custom-zen-sidebar-panel-color-opacity, 0.8);}

@media (-moz-bool-pref: "uc.custom-zen-sidebar-panel.show-borders") {
                border: 1 !important;
            }
            @media not (-moz-bool-pref: "uc.custom-zen-sidebar-panel.show-borders") {
                border: 0 !important;
            }

resizer {
                @media not (-moz-bool-pref: "uc.custom-zen-sidebar-panel.transparent-resizer") {
                    background: transparent;
                }
            }
        }
    }
}