[Please advise me on the effect of the website]

Hi everybody
I see this website page, and I see the button effect
Can you give me an example of its code?
Sorry I don't have a codepen
I just need to refer to its text effect
Thanks all!

 var e = t.querySelectorAll("[data-hover-animation-first-el] [data-hover-animation-str]");
                mi.fromTo(e, {
                    y: "0%"
                }, {
                    y: "-100%",
                    ease: "power4.easeOut",
                    stagger: {
                        each: .015
                    }
                });
                var n = t.querySelectorAll("[data-hover-animation-second-el] [data-hover-animation-str]");
                mi.fromTo(n, {
                    y: "0%"
                }, {
                    y: "-100%",
                    ease: "power4.easeInOut",
                    stagger: {
                        each: .024
                    }
                })

Website:
https://nakatani-tac.jp/



https://gyazo.com/8740ec7ff8c4450812fe813377ecfe3d