Kickstart Pro: remove transparent effect on site description text on tablet and mobile screen sizes (should be around line 3128, but may vary depending on the version of the theme you're using or if you've done any other modifications to it)

style.css

@media only screen and (max-width: 900px) {

  .site-description {
      color: #fff;
      opacity: 0.5; /* Remove or comment out this line */
      padding: 0 0 9px;
  }
  
}