@media screen and (max-width: 900px) {
  .navPage > div > ul {
    padding:20px 5px;
  }
  .navPage > div > ul li {
    display:block;
    margin:0;
    line-height:35px;
  }
  #navPage .npB {
    border-right:none;
    line-height:45px;
  }
  #navPage .npN {
    border-left:none;
    line-height:45px;
  }
  .nav-collapse > ul {
    background-color:rgb(26,26,26);
  }
  #navSection {
    background-color:#666666;
    line-height:32px;
  }
  #navSection ul {
    width:100%;
    position:relative;
    padding:10px 0;
  }
  #navSection ul li {
    width:100%;
    margin:0;
  }

  #biIndex #navPage, #biIndex #navPage.stickTop {
    position:fixed;
    top:0;
    -webkit-transform: translateY(0%);
    -ms-transform: translateY(0%);
    transform: translateY(0%);
    z-index:2;
  }
  #introTop:before {
    display:none;
  }
  .js .nav-collapse {
    clip: rect(0 0 0 0);
    max-height: 0;
    position: absolute;
    display: block;
    overflow: hidden;
    zoom: 1;
  }

  .nav-collapse.opened {
    max-height: 9999px;
  }

  .disable-pointer-events {
    pointer-events: none !important;
  }

  .nav-toggle {
    -webkit-tap-highlight-color: rgba(0,0,0,0);
    -webkit-touch-callout: none;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    -o-user-select: none;
    user-select: none;
  }

  .mask {
    -webkit-transition: opacity 300ms;
    -moz-transition: opacity 300ms;
    transition: opacity 300ms;
    background: rgba(0,0,0, .5);
    visibility: hidden;
    position: fixed;
    opacity: 0;
    z-index: 1;
    bottom: 0;
    right: 0;
    left: 0;
    top: 0;
  }

  .android .mask {
    -webkit-transition: none;
    transition: none;
  }

  .js-nav-active .mask {
    visibility: visible;
    opacity: 1;
  }

  /* ------------------------------------------
    NAV TOGGLE STYLES
  --------------------------------------------- */

  @font-face {
    font-family: "responsivenav";
    src:url("../fonts/responsivenav.eot");
    src:url("../fonts/responsivenav.eot?#iefix") format("embedded-opentype"),
      url("../fonts/responsivenav.ttf") format("truetype"),
      url("../fonts/responsivenav.woff") format("woff"),
      url("../fonts/responsivenav.svg#responsivenav") format("svg");
    font-weight: normal;
    font-style: normal;
  }

  .nav-toggle {
    display:block;
    margin:0 auto;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-decoration: none;
    overflow: hidden;
    width: 60px;
    height: 45px;
    text-align:center;
  }

  .nav-toggle:before {
    color: #fff; /* Edit this to change the icon color */
    font: normal 26px/45px "responsivenav"; /* Edit font-size (28px) to change the icon size */
    text-transform: none;
    text-align: center;
    content: "\2261"; /* Hamburger icon */
    text-indent: 0;
    speak: none;
    width: 100%;
  }

  .nav-toggle.active:before {
    font-size: 24px;
    content: "\78"; /* Close icon */
  }
}


@media screen and (min-width: 901px) {
  .js .nav-collapse.closed {
    max-height: none;
  }
  .nav-toggle {
    display: none;
  }
  .mask {
    display: none !important;
    opacity: 0 !important;
  }
}

@media only screen and (min-device-width : 320px) and (max-device-width : 480px) {
  .mask {
    -webkit-transform: translateZ(2px);
  }
  #navPage, .nav-collapse, #biIndex #navPage {
    -webkit-transform: translateZ(3px);
  }
}