/* Mobile device */
@media only screen and (max-width: 640px) {
  /* Hide sidebar */

  #sidebar {
    display: none;
  }

  #content-container {
    margin-right: 0;
  }

  #content {
    margin-right: 0;
  }

  .promo-topbar {
    display: none;
  }

  .container {
    min-width: 320px;
    padding: 0 8px;
  }

  .wrap {
    min-width: 320px;
    padding: 0 8px;
  }

  .call-to-write {
    display: none;
  }

  .menu li .counter,
  .sub-menu li .counter {
    display: none;
  }

  .top-menu-top {
    display: none;
  }

  #header {
    min-width: 320px;
  }

  .h_main {
    display: none;
  }

  .h_side {
    height: 71px;
    float: left;
  }

  .mobile-only {
    display: inline;
  }

  .mobile-only-block {
    display: block;
  }

  .topic .topic-footer li {
    border-left: 0 none;
    font-size: 12px;
  }

  .topic .topic-footer li.date {
    display: none;
  }

  .topic .topic-footer li.comments-total a span,
  .topic .topic-footer li.comments-total a {
    background-image: none;
    padding-left: 0;
    padding-bottom: 0;
  }

  .topic .topic-footer li.author,
  .topic .topic-footer li.read,
  .topic .topic-footer li.comments-total,
  .topic .topic-footer li.rating {
    background-image: none;
    padding-top: 0;
    padding-left: 0;
    padding-right: 0;
    margin-right: 15px;
  }

  .footer_centering,
  .additional-materials-list {
    display: none;
  }

  .login_form {
    width: auto;
  }

  .window-popup {
    width: auto;
  }

  .register_text_table tr td:nth-child(2) {
    display: none;
  }

  .register_text_table td input[type="text"] {
    width: auto;
  }
}