#container-countdown {
  display: flex;
  justify-content: center;
}

#countdown {
  font-size: 60px;
  margin-top: 100px;
  background: linear-gradient(to right, #415679, #f0f3f5); 
  border-radius: 20px;
  padding: 30px;
}

#header-cont {
  display: flex;
  justify-content: center;
}

video {
  position: fixed;
  right: 0;
  bottom: 0;
  min-width: 100%;
  min-height: 100%;
  z-index: -10;
}
#buttonRainAudio, #buttonRainVideo{
  display: flex;
  margin: 0 auto;
  font-size: 20px;
  background: linear-gradient(to right, #415679, #f0f3f5); 
  border-radius: 20px;
  padding: 15px;
  border-style: none;
  }

 #buttonRainVideo{
      display: none;
    }  
 #btn, a{
    display: flex;
    margin: 0 auto;
    font-size: 15px;
    border-style: none;
    text-decoration: none;
    color: black;
      border-radius: 10px;
    padding: 5px;
  } 
 #btn{
    background: linear-gradient(to right, #415679, #f0f3f5); 
  } 


@media all and (max-width: 500px) {
  
  #buttonRainVideo{
  display: block;
}
  #btn{
    margin-top: 100px;
  } 

}