function myFunction() {
    if(document.getElementById('dropf-button').click==true)
      document.getElementById('dropf-container').classList.toggle("show")
    if (document.getElementById('dropi-button').click==true)
      document.getElementById('dropi-container').classList.toggle("show")
    if (document.getElementById('dropy-button').click==true)
      document.getElementById('dropy-container').classList.toggle("show")

}