  }

    $$('.fee').forEach(function (item) {
        item.onclick = function () {
            $$('.fee .num').forEach(function (item2) {
                item2.style.backgroundColor = "grey";
            });
            this.getElementsByClassName("num")[0].style.backgroundColor = "green";
            sessionStorage["feerate"] = this.getElementsByClassName("num")[0].innerText;
            $('#sats_per_byte').innerText = Number(this.getElementsByClassName("num")[0].innerText);
            $('#sats_range').va