seeMoreBtn.addEventListener("click", function () {
    plansExtender.classList.add('shown');
});

const seeMoreBtn = document.querySelector('.plans-see-more-txt');
const plansExtender = document.querySelector('.plans-extender');
const plansExtenderShown = document.querySelector('.plans-extender.shown'); //<- 이 아이... 
const closeExtenderBtn = document.querySelector('.plans-extender-btn');
const header = document.querySelector('.header')

window.addEventListener("scroll", function (e) {
    console.log(window.scrollY)
    if (window.scrollY < 99) {
        plansExtender.style.position = 'absolute';
        plansExtender.style.transition = "";
        console.log(plansExtenderShown);
        plansExtender.style.top = '6.5rem';
        header.style.position = 'relative';
    }
    else {
        plansExtender.style.position = 'fixed';
        plansExtender.style.top = '0';
        header.style.position = '';
        plansExtender.style.transition = "";
    }
});