@media only screen and (max-width: 1000px) {
  .header_bottom {
    position: relative;
    z-index: 1000;
  }

  nav.mobile_menu {
    display: block !important;
    overflow: visible !important;
    clear: both;
    width: 100% !important;
    float: none !important;
    position: relative;
    z-index: 1001;
  }

  nav.mobile_menu > ul {
    display: none;
    width: 100% !important;
    max-width: 100% !important;
    margin: 0 !important;
    background: #fff;
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.12);
  }

  body.mobile-menu-open nav.mobile_menu > ul {
    display: block;
  }

  nav.mobile_menu ul.sub_menu {
    display: none;
  }

  .mobile_menu_button {
    cursor: pointer;
    z-index: 1002;
    position: relative;
  }

  .mobile_menu_button.active span {
    opacity: 0.7;
  }
}