close: "<svg title=\"close button icon\" aria-hidden=\"true\" id=\"icon_close\" width=\"18\" height=\"18\" viewBox=\"0 0 18 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"><rect x=\"3.2561\" y=\"0.321533\" width=\"20.75\" height=\"4.15\" transform=\"rotate(45 3.2561 0.321533)\" fill=\"none\"/><rect x=\"17.9285\" y=\"3.25598\" width=\"20.75\" height=\"4.15\" transform=\"rotate(135 17.9285 3.25598)\" fill=\"none\"/></svg>" = ...
Close button icon (small)