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  • button.onclick = function () {
    const bounding = this.getBoundingClientRect();
    select.style.top = (bounding.bottom + window.pageYOffset) + ‘px’;
    select.style.left = (bounding.left + window.pageXOffset) + ‘px’;
    select.style.width = bounding.width + ‘px’;
    };
    select.onclick = function (event) {
    if (event.target.type == ‘radio’) {
    this.hidePopover();
    button.textContent = event.target.parentElement.textContent;
    }
    }