text: function modalWindowThu() {
      var modal = document.getElementById("thuModal");
      modal.style.display = "block";
      window.onclick = function (event) {
          if (event.target == modal) {
              modal.style.display = "none";
          }
      }
  
      let span = document.getElementsByClassName("close")[0];
      span.onclick = function () {
          modal.style.display = "none";
      }
  }
  
  
  function modalWindowHoang() {
      let modal = document.getElementById("hoangModal");
      modal.style.display = "block";
      window.onclick = function (event) {
          if (event.target == modal) {
              modal.style.display = "none";
          }
      }
  
      let span = document.getElementsByClassName("close")[1];
      span.onclick = function () {
          modal.style.display = "none";
      }
  }
  
  function modalWindowDung() {
      let modal = document.getElementById("dungModal");
      modal.style.display = "block";
      window.onclick = function (event) {
          if (event.target == modal) {
              modal.style.display = "none";
          }
      }
  
      let span = document.getElementsByClassName("close")[2];
      span.onclick = function () {
          modal.style.display = "none";
      }
  }
  
  function modalWindowNgan() {
      let modal = document.getElementById("nganModal");
      modal.style.display = "block";
      window.onclick = function (event) {
          if (event.target == modal) {
              modal.style.display = "none";
          }
      }
  
      let span = document.getElementsByClassName("close")[3];
      span.onclick = function () {
          modal.style.display = "none";
      }
  }