/* when the browser window is at least 600px and above */

@media screen and (min-width: 37.5rem) {
  .element {

    /* apply some styles */
  
  }
}

/* when the browser window is between 320px and 768px */

@media screen (min-width: 20rem) and (max-width: 48rem) {
  .element {

    /* apply some styles */

  }
}