@media screen and (max-width: 700px) {
  .infotabs {
    display: block;
  }
  .infoleft,
  .infomid {
    width: auto;
  }
  #header {
    display: block;
    text-align: center;
    margin-bottom: 20px;
  }
  .tech-p2 img,
  .tech-p3 img,
  .tech-p4 img {
    display: none;
  }
}

@media only screen and (max-width: 450px) {
  .prev,
  .next,
  .text {
    font-size: 11px;
  }  
}