:root {
  --header-bg-color: #547abb;
  --header-bottomline-color: #3d4f78;
  --footer-bg-color: #474;
}

body {
  color: black;
  font-family: Verdana, Arial, Helvetica, sans-serif;
  font-size: 16px;
  line-height: 130%;
  text-decoration: none;
}

#main-container {
  min-height: calc(100vh - 380px);
}

#header-bg {
  background: var(--header-bg-color);
  box-shadow: 0 0px 8px #555;
  margin: 0 0 1px 0;
  border-bottom: 0.3em solid var(--header-bottomline-color);
}

#brand-logo {
  padding: 10px;
}

#brand-logo img {
  width: 100%;
  max-width: 140px;
}

#brand-title {
  padding: 40px 10px;
}

#brand-title span {
  font-size: 2em;
  color: white;
  line-height: 1.2em;
}

.navbar-nav > .dropdown {
  margin: 0;
}

#page-footer {
  margin-top: 50px;
  background: var(--footer-bg-color);
  padding: 15px;
}

#page-footer .footer-logo {
  height: 55px;
  padding: 10px;
}

#page-footer .footer-logo-nsf {
  height: 60px;
}

#page-footer #cc-logo {
  border-width: 0;
  height: 40px;
}

#page-footer p {
  color: #bbb;
  line-height: 1rem;
}

#page-footer p a {
  color: white;
}

img {
  padding: 5px;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  margin: 2px 0px 2px 0px;
  padding: 0px;
  color: #006;
  font-size: 16px;
  font-weight: normal;
  font-style: italic;
  text-align: left;
  line-height: 130%;
}

h1 {
  margin: 10px 0px 10px 0px;
  font-size: 22px;
  font-weight: bold;
  font-style: normal;
  text-align: center;
}

h2 {
  margin: 8px 0px 8px 0px;
  font-size: 16px;
  font-weight: bold;
  font-style: normal;
  text-align: left;
}

h3 {
  margin: 4px 0px 4px 0px;
  font-size: 16px;
  font-weight: bold;
  font-style: normal;
  text-align: left;
}

code {
  background-color: #def;
}

pre {
  width: 95%;
  display: block;
  background-color: #def;
  padding: 4px;
  border: 1px solid black;
  margin-left: 0px;
  margin-right: 0px;
  margin-bottom: 20px;
  margin-top: 20px;
}

.message_box {
  width: 95%;
  display: block;
  background-color: #ffd;
  padding: 4px;
  border: 1px solid black;
  margin-left: 0px;
  margin-right: 0px;
  margin-bottom: 20px;
  margin-top: 20px;
}

a {
  color: #069;
  text-decoration: none;
}
a:hover {
  color: #069;
  text-decoration: underline;
}
a:visited {
  color: #069;
  text-decoration: none;
}
a:visited:hover {
  color: #069;
  text-decoration: underline;
}

table {
  color: black;
  font-family: Verdana, Arial, Helvetica, sans-serif;
  text-decoration: none;
}

th,
td {
  padding: 10px;
}

table#centralSection {
  width: 100%;
  background-color: white;
  border: 0px solid white;
  margin: 0px 0px 0px 0px;
  padding: 2px 0px 2px 0px;
}

table#centralSection tr {
  text-align: left;
  vertical-align: top;
}

table#centralSection td#lmenu {
  width: 120px;
  background-color: #fff;
}

table#centralSection td#rmenu {
  width: 180px;
  background-color: #ddd;
}

#contentSection {
  width: 95%;
  background-color: transparent;
  margin: 0px 0px 0px 0px;
  padding: 0px 5px 0px 15px;
}
/*
			Other formatting.
*/

.highlight {
  font-size: 1.6em;
  font-weight: bold;
  line-height: 1.2em;
}

ul.events {
  list-style-type: none;
  margin: 0;
}

li.events {
  background: url("/s/images/bbh-bullet.png") no-repeat left top;
  height: 50px;
  padding: 20px 0px 0px 60px;
  font-size: 200%;
  font-weight: bold;
}

li.others {
  background: url("/s/images/tick.png") no-repeat left top;
  height: 50px;
  padding: 20px 0px 0px 60px;
  font-size: 150%;
  font-weight: bold;
}

.caption {
  color: #777;
  font-size: 9px;
  font-weight: normal;
  text-align: center;
}

.meta {
  padding: 10px;
  color: #069;
  font-size: 10px;
  font-weight: normal;
  font-style: italic;
}

#id_honeypot,
label[for="id_honeypot"] {
  display: none !important;
}

#comment_form label,
#comment_form input[type="text"],
#comment_form textarea {
  display: block;
}

.tweets {
  position: relative;
  text-align: left;
  color: #777;
  font-size: 10px;
  font-weight: normal;
}

img.fleft {
  float: left;
  vertical-align: top;
}

.pubtitlea {
  color: black;
  font-weight: bold;
}
.pubtitleb {
  color: red;
  font-weight: bold;
}

.warning {
  color: #ff007f;
  font-weight: normal;
  text-align: center;
  text-decoration: none;
}

.recommendf {
  color: red;
  font-weight: normal;
  text-decoration: none;
  text-align: center;
}

.recommend {
  color: red;
  font-size: 0.85em;
  text-decoration: none;
  text-align: center;
}
.recommend a {
  color: #069;
}

.centeredtext {
  text-align: center;
}

.largecenteredtext {
  text-align: center;
  font-size: 1.5em;
}

.errataentry {
  font-family: Monospace;
  font-size: 14px;
  text-decoration: none;
}
.errata a {
  color: #aa0000;
}
.errata a:hover {
  color: #ff0011;
}
.errata a:visited {
  color: #880022;
}
.errata a:visited:hover {
  color: #ff0022;
}
/*
			Quick links table.
*/
.quicklinks {
  position: relative;
  padding: 3px;
  width: 95%;
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}

.quicklinks .qltitle {
  text-align: center;
  font-weight: bold;
  position: relative;
  margin: 3px;
  border-style: solid none none none;
  border-width: 2px;
  border-color: #b0b0b0;
}

.quicklinks table {
  width: 100%;
  text-align: left;
  font-size: 0.85em;
}

tr.qlodd {
  background-color: #d8d8d8;
}
tr.qlodd th {
  background-color: #b0b0b0;
}
tr.qlodd th a {
  color: black;
  text-decoration: none;
}
tr.qlodd th a:hover {
  color: #39f;
  text-decoration: none;
}
tr.qlodd th a:visited {
  color: black;
  text-decoration: none;
}
tr.qlodd th a:visited:hover {
  color: #39f;
  text-decoration: none;
}

tr.qleven {
  background-color: #ffffff;
}
tr.qleven th {
  background-color: #d8d8d8;
}
tr.qleven th a {
  color: black;
  text-decoration: none;
}
tr.qleven th a:hover {
  color: #39f;
  text-decoration: none;
}
tr.qleven th a:visited {
  color: black;
  text-decoration: none;
}
tr.qleven th a:visited:hover {
  color: #39f;
  text-decoration: none;
}
/*	
  Standard product tables.
  Show and hide controls.
*/
.treeshowhide {
  position: relative;
  width: 100%;
}
.treeshowhide div {
  color: blue;
  font-weight: bold;
  text-decoration: none;
  text-align: right;
  margin-left: 1em;
  float: right;
}
.treeshowhide div:hover {
  background-color: blue;
  color: white;
}
.treeclear {
  clear: right;
}
/*
  Table presentation.
*/
.datatablelink {
  font-size: 0.85em;
  text-decoration: none;
  text-align: center;
  position: relative;
}

.datatable {
  color: black;
  background-color: white;
  margin: 0px 0px 10px 0px;
  padding: 3px;
  width: 100%;
  border: solid 2px #069;
  text-decoration: none;
  text-align: center;
}

.dataheader {
  /* Show/hide suppressed. */
  color: white;
  background-color: #069;
  font-size: 1.2em;
  border: 1px solid #069;
  width: 100%;
}

.dataheaderv {
  /* Visible. */
  color: white;
  background: #069 url(/s/images/arrowopen.gif) center left no-repeat;
  font-size: 1.2em;
  border: 1px solid #069;
  width: 100%;
}
.dataheaderv div:hover {
  color: #ddf;
  text-decoration: underline;
}

.dataheaderh {
  /* Hidden.  */
  color: black;
  background: #e5eaef url(/s/images/arrowclose.gif) center left no-repeat;
  font-size: 1.2em;
  border: 1px solid #069;
  width: 100%;
}
.dataheaderh div:hover {
  color: blue;
  text-decoration: underline;
}
.dataheaderroll {
  text-align: center;
}

.datasubheader {
  color: #069;
  background-color: #dcdcdc;
  padding: 3px;
  border-left: 1px solid #999;
  border-right: 1px solid #999;
}

.datacellleft {
  text-align: left;
  vertical-align: middle;
  padding: 3px;
  border-left: 1px solid #999;
  border-right: 1px solid #999;
  border-bottom: 2px solid #69c;
}

.datacellcenter {
  text-align: center;
  vertical-align: middle;
  padding: 3px;
  border-left: 1px solid #999;
  border-right: 1px solid #999;
  border-bottom: 2px solid #69c;
}

.datacellright {
  text-align: right;
  vertical-align: middle;
  padding: 3px;
  border-left: 1px solid #999;
  border-right: 1px solid #999;
  border-bottom: 2px solid #69c;
}

.nvoid {
  font-weight: normal;
  color: #040;
  font-size: 0.85em;
}
.nvoidhdr {
  color: #040;
  font-size: 0.85em;
}
/*
  Tables of links.
*/
.linktable {
  color: black;
  background-color: white;
  margin: 0px 0px 10px 0px;
  padding: 3px;
  width: 100%;
  border: 0px;
  text-decoration: none;
  text-align: center;
}

.linkcellleft {
  text-align: left;
  vertical-align: middle;
  padding: 3px;
}

.linkcellcenter {
  text-align: center;
  vertical-align: middle;
  padding: 3px;
}

.linkcellright {
  text-align: right;
  vertical-align: middle;
  padding: 3px;
}
/*
  Product detail pages.
*/
#detailheader {
  color: black;
  font-weight: normal;
  font-size: 14px;
  line-height: 18px;
  font-family: Arial, Helvetica, Geneva, Swiss, SunSans-Regular, sans-serif;
  text-decoration: none;
}
.detailrow {
  position: relative;
  height: 18px;
}
.detailrowleft {
  position: absolute;
  left: 0px;
  bottom: 0px;
  width: 150px;
}
.detailrowright {
  position: absolute;
  left: 150px;
  bottom: 0px;
  width: 500px;
}
.detailhighlight {
  color: #069;
  font-weight: bold;
}
/*
  Print page breaks.
*/
.nopgbrk {
  page-break-inside: avoid;
}

.stripe table {
  font-family: arial, sans-serif;
  border-collapse: collapse;
  width: 30%;
}

.stripe td,
th {
  border: 1px solid #dddddd;
  text-align: left;
  padding: 8px;
}

.stripe tr:nth-child(even) {
  background-color: #dddddd;
}

.supsub {
  display: inline-block;
}

.supsub sup,
.supsub sub {
  position: relative;
  display: block;
  font-size: 0.7em;
  line-height: 1.2;
}

.supsub sub {
  top: 0.3em;
}

.portalbg {
  position: absolute;
  z-index: -1;
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;
  background: url("/static/images/BlackHoleArt_Lede1300.jpg") center center;
  opacity: 1;
  width: 100%;
  height: 100%;
  background-size: cover;
  filter: grayscale(100%);
  filter: contrast(40%);
}

.pathcard {
  color: black;
  background-color: #eee;
  padding: 20px;
  margin-top: 20px;
  margin-bottom: 40px;
}

.databtn {
  color: white;
  font-size: 1em;
  margin: 10px;
  background-color: #474;
  border-color: #060;
}

.datapage h2 {
  color: #555;
  font-size: 1.4em;
}

.datapage {
  margin-bottom: 40px;
}

li {
  margin: 8px 0;
}