@media only screen and (max-width: 480px) {
      h1 {
          font-size: 15px;
  line-height: 15px;
  letter-spacing: 1px;
      }
      h2 {
          font-size: 15px;
  line-height: 15px;
  letter-spacing: 1px;
      }
      h3 {
          font-size: 15px;
  line-height: 15px;
  letter-spacing: 1px;
      }
      h4 {
          font-size: 15px;
  line-height: 15px;
  letter-spacing: 1px;
      }
      h5 {
          font-size: 15px;
  line-height: 15px;
  letter-spacing: 1px;
      }
      h6 {
          font-size: 15px;
          line-height: 15px;
          letter-spacing: 1px;
      }
}