a {
  color: #1cb4e2;
}
a:hover {
  color: #e2c21c;
}

@media(max-width:767px) {
  /* mobile width css */
  .someClassName {
    color: red;
    text-align: center;
  }
}
@media(min-width:768px) {
  /* desktop width css */
  .someClassName {
    color: red;
    text-align: center;
  }
}