ul {
  list-style-type: square;
}

@media only screen and (max-width : 499px) {
  
  #banner h1 {
    font-size: 4em;
  }
  
}

@media only screen and (max-width : 399px) {
  
  #banner h1 {
    font-size: 3em;
  }
  
}