$(document).ready(()=>{

  const plans = $('.plans')
  const clouds = plans.find('.cloud')
  const delay = 1000
  let timer = 0
  
  setTimeout(()=>{
    clouds.each((index,elem)=>{
      const el = $(elem)
      timer = index*delay
      
      if(el.hasClass('empty')){
        timer -= delay
      }
        
      setTimeout(()=>{
        if(!el.hasClass('empty')){
          $('#notify1')[0].play()
        }
        el.fadeIn(500)
      },timer)
      
    })
  },delay)
  
})