@media screen and (max-width: 600px)
{
  .model_container {
    display: block;
  }
  .model_left {
    display: block;
  }
  .model_right {
    display: block;
  }
  .model_pic {
    display: none;
  }
  .model_item {
    display: block;
  }
  .model_item_left {
    display: block;
    width: auto;
  }
  .model_item_right {
    display: block;
  }
  .model_item_pic {
    width: auto;
    display: block;
    margin-right: 0px;
  }
  select {
    display: block;
    width: 100%;
    max-width: none;
    margin-bottom: 15px !important;
  }
  .model_button {
    width: calc(100% - 20px);
  }
   header a {
    font-size: 0px;
  }
  .big_button {
  display: block;
  }
}