const videos = document.querySelectorAll("[data-video]");
const videoButton = document.querySelector(".button-play");

for (let i = 0; i < videos.length; i++) {
  videos[i].addEventListener("play", function () {
    videoButton.style.opacity = 0;
  });

  videos[i].addEventListener("pause", function () {
    videoButton.style.opacity = 1;
  });
}