@media (max-width: 480px) {
  div[style*="float:right"][style*="max-width:300px"],
  div[style*="float:right"][style*="max-width:400px"],
  div[style*="float: right"][style*="max-width:300px"],
  div[style*="float: right"][style*="max-width:400px"] {
    display: none !important;
  }
}