.centered-btns_nav {
    z-index: 3;
    position: absolute;
    -webkit-tap-highlight-color: rgba(0, 0, 0, 0);
    top: 50%;
    left: 0;
    opacity: 0.9;
    text-indent: -9999px;
    overflow: hidden;
    text-decoration: none;
    height: 63px;
    width: 63px;
    background: transparent url("/images/themes.gif") no-repeat left top;
    margin-top: -31px;
    margin-right: 0px;
}

.centered-btns_nav:active {
    opacity: 1.0;
}

.centered-btns_nav.next {
    left: auto;
    background-position: right top;
    right: 0px;
    margin-right: 0px;
}

.centered-btns_nav:focus,
.transparent-btns_nav:focus,
.large-btns_nav:focus {
    outline: none;
}

/*

     SECTION 108(a)(3)).
*/
/*
  captures_list: 0.501
  exclusion.robots: 0.026
  exclusion.robots.policy: 0.015
  esindex: 0.01
  cdx.remote: 8.309
  LoadShardBlock: 169.921 (3)
  PetaboxLoader3.datanode: 188.141 (4)
  load_resource: 72.312
  PetaboxLoader3.resolve: 50.824
*/