@-moz-document url-prefix("chrome:") {

.ctrlTab-canvas {
        border-radius: 0.5rem !important;
    }

.ctrlTab-preview-inner {
        border-radius: 0.5rem !important;

canvas {
            border-radius: 0.5rem !important;
        }

img {
            border-radius: 0.5rem !important;
        }
    }

.ctrlTab-favicon-container {
        display: none !important;
    }

#ctrlTab-panel {
        --panel-background: #212120 !important;
        border-color: #2121207D !important;
    }

}