#modal_wrapper_login.overlay:before {
    content: " ";
    width: 100%;
    height: 100%;
    position: fixed;
    z-index: 100;
    top: 0;
    left: 0;
    background: #000;
    background: rgba(0,0,0,0.7);
  }

  #modal_window_login {
    display: none;
    z-index: 200;
    position: fixed;
    left: 50%;
    top: 50%;
    /* width: 360px; */
    width: 40%;
    padding: 10px 20px;
    background: #fff;
    border: 5px solid #999;
    border-radius: 10px;
    box-shadow: 0 0 10px rgba(0,0,0,0.5);
  }

  #modal_wrapper_login.overlay #modal_window_login {
    display: block;
  }