text: const baoquan = document.querySelector(".bao-quan");
  const chitiet = document.querySelector(".chi-tiet");
  if(baoquan){
      baoquan.addEventListener("click",function(){
          document.querySelector(".product-content-right-bottom-content-chitiet").style.display = "none"
          document.querySelector(".product-content-right-bottom-content-baoquan").style.display = "block"
      })
  }
  if(chitiet){
      chitiet.addEventListener("click",function(){
          document.querySelector(".product-content-right-bottom-content-baoquan").style.display = "none"
          document.querySelector(".product-content-right-bottom-content-chitiet").style.display = "block"
      })
  }
  const button = document.querySelector(".product-content-right-bottom-top");
  
  if(button){
      button.addEventListener("click",function(){
          document.querySelector(".product-content-right-bottom-content-big").classList.toggle("active_down")
          
      })
  }
   
  const bigImg = document.querySelector(".product-content-left-big-img img");
  const smalImg = document.querySelectorAll(".product-content-left-sm-img img");
  smalImg.forEach(function(imgItem,X){
      imgItem.addEventListener("click",function(){
          bigImg.src= imgItem.src;
      })
  })
  
  