text: let button = document.getElementById("changeBtn");
  let container = document.getElementById("container")
  let colorArray = ["cadetblue","chatreuse","cornflowerblue", "chocolate","coral","cornsilk","crimson","cyan","tomato","violet","wheat","yellow"];
  function changeColorFn() {
      let backgoundColor = container.style.backgroundColor
      let newColor = Math.round(Math.random() * 11)
      if (colorArray[newColor] != backgoundColor) {
          container.style.backgroundColor = colorArray[newColor];
      }
  }
  button.addEventListener("click",changeColorFn)