@media only screen and (max-width: 480px) {
  h1 {
    font-size: 1.8rem;
    line-height: 2.5rem;
  }
  h3 {
    font-size: 1.5rem;
    line-height: 2rem;
  }
 .space {
    margin: 0 0 0 0 !important;
}
}