body{
  display:flex;
  flex-direction: column;
  
}

header{
  justify-content: center;
}

section{
  margin:30px;
  display: flex;
  flex-direction: column;
  align-items: center;
  font-size: 25px;
}

iframe{
  width: 800px;
  height: 1000px;
}