.menu > a:nth-child(5) {
  /*! background-color: rgba(255, 255, 255, .9); */
}

.left-panel {
  float:left;
  padding-top:40px;
  width:30%;
  height:100%;
}

.right-panel {
  float:right;
  width:70%;
  text-align:justify;
  padding-top:40px;
  padding-bottom:40px;
  padding-left:40px;
  padding-right:40px;
  line-height:220%;
  color:#696969;
  height:100%;
  background-color: #fafafa;
}

.link {
    text-decoration:none;
    border-bottom: solid 1px #1aa6b7;
}

.link:hover {
    border-bottom: solid 1px #dc912f;
}


@media (max-width: 1000px) {

  main {
    height:1000px;
  }

  .left-panel {
    display:block;
    width:100%;
    height:auto;
    padding-bottom:40px;

    text-align:center;
    
    border-bottom: 1px solid #ccc;
  }

  .right-panel {
    width:100%;
    border-left: none;
    min-height: 800px;
  }


  .panel_menu_item {
    display:inline-block;
    width:100%;
    text-align:left;
    padding:4px;
    /*! text-align:center; */
    padding-left: 40px;
  }

  .selected_panel_menu_item {
    display:inline-block;
    /*! width:40%; */
    /*! border: solid 1px #b0b0b0; */
  }
}