fined,
            publish: {
                color: "#4CAF50",
                opacity: 0.9,
                img: "",
                position: "top-left"
            },

            attached: function() {
                var self = this;
                this.style.backgroundImage = "url(" + this.img + ")"
                this.classList.add(this.position);
                var buttons = this.querySelectorAll("paper-button[affirmative]");
                if (buttons.length) {
                    for (var i =