main.css

* {
    box-sizing: border-box;
}
body {
    margin: 0;
    font-family: sans-serif;
    font-weight: 300;
}

.main .highlight{
  background: #EEE;
  border-radius: 2px;
  overflow-x: auto;
  padding:10px;
}

.main code{
  font-family: Monaco, Menlo, Consolas, "Courier New", monospace;
  font-size: 13px;
  border: none;
}

.main p code{
  font-size: 15px;
}

.main ul code{
  font-size: 15px;
}

/* For desktop: */
.col-1 {width: 8.33%;}
.col-2 {width: 16.66%;}
.col-3 {width: 25%;}
.col-4 {width: 33.33%;}
.col-4-disabled {width: 33.33%; pointer-events: none; opacity: 0.4;}
.col-5 {width: 41.66%;}
.col-6 {width: 50%;}
.col-6-disabled  {width: 50%; pointer-events: none; opacity: 0.4;}
.col-7 {width: 58.33%;}
.col-8 {width: 66.66%;}
.col-9 {width: 75%;}
.col-10 {width: 83.33%;}
.col-11 {width: 91.66%;}
.col-12 {width: 100%;}

.col-fifth {width: 20%;}
.col-sixteenth{width: 6.25%;}

h2{
  font-weight: 300;
  padding-top: 30px;
  color: rgba(150, 27, 40);
}

h4 {
  margin-top: 2em;
}

.main img{
  max-width: 100%;
}

.metrics img{
  max-width: 50%;
}

.row::after {
    content: "";
    clear: both;
    display: table;
}

[class*="col-"] {
    float: left;
    padding: 7px;
}

.button {
    cursor: pointer;
    background-color: #EEE;
    border: none;
    color: black;
    width: 100%;
    min-height: 40px;
    text-align: center;
    text-decoration: none;
    display: inline-block;
    font-family: sans-serif;
    font-weight: 300;
    font-size: 14px;
    border-radius: 2px;
    -webkit-transition-duration: 0.4s; /* Safari */
    transition-duration: 0.4s;
}

.grayed{
    background-color: #CCC;
}

.hovered{
    background-color: rgba(150, 27, 40, 0.9);
    color: white;
}

.button:hover {
    background-color: rgba(150, 27, 40, 0.9);
    color: white;
}

.titlecol{
    min-height: 40px;
    padding-top: 16px;
    font-size: 15px;
}

.topnav {
  background-color: #0277BD;
  overflow: hidden;
  z-index: 2;
  line-height: 1;
}

.topnav a {
  display: block;
  text-align: center;
  text-decoration: none;
}

.topnav a:hover {
  background-color: #ddd;
  color: black;
}

.topnav .icon {
  padding: 12px 14px 13px 14px;
  color: white;
  display: none;
}

.menuitem {
  float: right;
  color: white;
  padding: 14px 14px 13px 14px;
  font-size: 20px;
}

.title {
  float: left;
  color: white;
  padding: 12px 14px 12px 14px;
  font-size: 24px;
}

#challenge_banner {
  top: 42px;
  left: 0px;
  height:50px;
  width:100%;
  position: fixed;
  background-color: #0277BD;
  color: rgba(255, 255, 255, 1);
  background-image: linear-gradient(#0277BD, white), url(images/challenge.jpg);
  background-position: center;
  background-repeat: no-repeat;
  background-size: cover;
  z-index: 1;
}

#download_banner {
  top: 42px;
  left: 0px;
  height:50px;
  width:100%;
  position: fixed;
  background-color: #0277BD;
  color: rgba(255, 255, 255, 1);
  background-image: linear-gradient(#0277BD, white), url(images/download.jpg);
  background-position: center;
  background-repeat: no-repeat;
  background-size: cover;
  z-index: 1;
}

#extended_banner {
  top: 42px;
  left: 0px;
  height:50px;
  width:100%;
  position: fixed;
  background-color: #0277BD;
  color: rgba(255, 255, 255, 1);
  background-image: linear-gradient(#0277BD, white), url(images/extended.jpg);
  background-position: center;
  background-repeat: no-repeat;
  background-size: cover;
  z-index: 1;
}

#extras_banner {
  top: 42px;
  left: 0px;
  height:50px;
  width:100%;
  position: fixed;
  background-color: #0277BD;
  color: rgba(255, 255, 255, 1);
  background-image: linear-gradient(#0277BD, white), url(images/extras.jpg);
  background-position: center;
  background-repeat: no-repeat;
  background-size: cover;
  z-index: 1;
}

#news_banner {
  top: 42px;
  left: 0px;
  height:50px;
  width:100%;
  position: fixed;
  background-color: #0277BD;
  color: rgba(255, 255, 255, 1);
  background-image: linear-gradient(#0277BD, white), url(images/news.jpg);
  background-position: center;
  background-repeat: no-repeat;
  background-size: cover;
  z-index: 1;
}

#factsfigures_banner {
  top: 42px;
  left: 0px;
  height:50px;
  width:100%;
  position: fixed;
  background-color: #0277BD;
  color: rgba(255, 255, 255, 1);
  background-image: linear-gradient(#0277BD, white), url(images/factsfigures.jpg);
  background-position: center;
  background-repeat: no-repeat;
  background-size: cover;
  z-index: 1;
}

#team_banner {
  top: 42px;
  left: 0px;
  height:50px;
  width:100%;
  position: fixed;
  background-color: #0277BD;
  color: rgba(255, 255, 255, 1);
  background-image: linear-gradient(#0277BD, white), url(images/team.jpg);
  background-position: center;
  background-repeat: no-repeat;
  background-size: cover;
  z-index: 1;
}

#explore_banner {
  top: 42px;
  left: 0px;
  height:50px;
  width:100%;
  position: fixed;
  background-color: #0277BD;
  color: rgba(255, 255, 255, 1);
  background-image: linear-gradient(#0277BD, white), url(images/explore.jpg);
  background-position: center;
  background-repeat: no-repeat;
  background-size: cover;
  z-index: 1;
}

.main {
    padding: 50px 40px 40px 40px;
    height: 100%;
    position: fixed;
    top: 42px;
    width: 100%;
    overflow: auto;
}

.active {
  background-color: #ddd;
  color: black !important;
}

.main th, .main td {
  border-bottom: 1px solid #ddd;
  padding: 8px;
}

.main thead {
  background-color: #f5f5f5;
}

.main tr:hover {
  background-color: #f5f5f5;
}

.main table {
  width: 100%;
  border-collapse: collapse;
  border-top: 2px solid black;
  border-bottom: 2px solid black;
}

#banner {
  background-color: #111111;
  color: rgba(255, 255, 255, 0.5);
  align-items: center;
  display: flex;
  justify-content: center;
  background-image: url("images/visualizer.jpg");
  background-position: center;
  background-repeat: no-repeat;
  background-size: cover;
  display: -ms-flexbox;
  height: 100%;
  overflow: hidden;
  position: absolute;
  top: 0;
  text-align: center;
  width: 100%;
}

 #banner:before {
    -moz-transition: opacity 3s ease;
    -webkit-transition: opacity 3s ease;
    -ms-transition: opacity 3s ease;
    transition: opacity 3s ease;
    -moz-transition-delay: 0.25s;
    -webkit-transition-delay: 0.25s;
    -ms-transition-delay: 0.25s;
    transition-delay: 0.25s;
    background: #111111;
    content: '';
    display: block;
    height: 100%;
    left: 0;
    opacity: 0.45;
    position: absolute;
    top: 0;
    width: 100%;
    z-index: 1;
}

#banner:after {
    background: linear-gradient(135deg, #0277BD 0%, #111111 74%);
    content: ' ';
    display: block;
    height: 100%;
    left: 0;
    opacity: 0.45;
    position: absolute;
    top: 0;
    webkit-linear-gradientidth: 100%;
    width: 100%;
    z-index: 1;
}

.inner button {
  font-weight: 100;
  cursor: pointer;
  width: 95%;
  border: 1px solid white;
  border-radius: 2px;
  padding: 15px;
  color: white;
  background-color: transparent;
  font-size: 14pt;
  -webkit-transition-duration: 0.4s; /* Safari */
  transition-duration: 0.4s;
}


.inner button:hover {
    background-color: white;
    color: rgba(150, 27, 40, 0.9);
}

.inner {
  display: flex;
  align-content: center;
  width: 100%;
  height: 100%;
  position: fixed;
  overflow-y: auto;
  z-index: 2;
}

.inner-inner {
  text-align: center;
  width: 100%;
  max-width: 1500px;
  position: relative;
  margin: auto;
}

#banner video {
    -moz-transform: translateX(50%) translateY(50%);
    -webkit-transform: translateX(50%) translateY(50%);
    -ms-transform: translateX(50%) translateY(50%);
    transform: translateX(50%) translateY(50%);
    bottom: 50%;
    height: auto;
    min-height: 100%;
    min-width: 100%;
    overflow: hidden;
    position: absolute;
    right: 50%;
    width: auto;
}


.inner h1 {
    font-size: 4.5rem;
    margin: 3rem 0 3rem 0;
    color: white;
    font-weight: 100}
.inner p {
    font-size: 1.5rem;
    margin: 0.5rem;
    color: white;
 }


@media screen and (max-width: 740px) {
    [class*="col-"] {
        width: 100%;
    }
    .main{
        padding: 200px 20px 20px 20px;
    }
    .topnav a:not(:first-child) {
        display: none;
    }
    .topnav div {
        display: none;
    }
    .topnav a.icon {
        float: right;
        display: block;
    }
    .topnav.responsive {position: relative;}
    .topnav.responsive .icon {
        position: absolute;
        right: 0;
        top: 0;
    }
    .topnav.responsive a {
        float: none;
        display: block;
        text-align: left;
    }

    .topnav.responsive .subitem {
      display: none;
    }

    .topnav.responsive .menu-dropdown {
        float: none;
        display: block;
        text-align: left;
    }

    .topnav.responsive .menu-dropdown-content {
      display: none;
    }
}


/* The dropdown container */
.menu-dropdown {
  overflow: hidden;
  float: right;
}

/* Dropdown button */
.menu-dropdown .droplink {
  font-size: 15px;
  border: none;
  outline: none;
  color: white;
  padding: 14px 14px 13px 14px;
  margin: 0; /* Important for vertical align on mobile phones */
}

.menu-dropdown.active .droplink {
  font-size: 15px;
  border: none;
  outline: none;
  color: black;
  padding: 14px 14px 13px 14px;
  margin: 0; /* Important for vertical align on mobile phones */
}

/* Dropdown content (hidden by default) */
.menu-dropdown-content {
  display: none;
  position: absolute;
  background-color: #f9f9f9;
  min-width: 160px;
  box-shadow: 0px 8px 16px 0px rgba(0,0,0,0.2);
  z-index: 1;
}

/* Links inside the dropdown */
.menu-dropdown-content a {
  float: none;
  color: black;
  padding: 12px 16px;
  text-decoration: none;
  display: block;
  text-align: left;
}

/* Add a grey background color to dropdown links on hover */
.menu-dropdown-content a:hover {
  background-color: #ddd;
}

/* Show the dropdown menu on hover */
.menu-dropdown:hover .menu-dropdown-content {
  display: block;
}

/* Fixes float problems */
.clearfix {
  clear:both;
}

a.anchor {
    display: block;
    position: relative;
    top: -200px;
    visibility: hidden;
}

a.anchor_collapsed {
    display: block;
    position: relative;
    top: -60px;
    visibility: hidden;
}


.main .search-container {
  float: left;
  overflow: hidden;
  background-color: #e9e9e9;
}

.main input[type=text] {
  padding: 6px;
  margin-top: 8px;
  font-size: 17px;
  border: none;
}

.main .search-container button {
  float: right;
  padding: 6px 10px;
  margin-top: 8px;
  margin-right: 16px;
  background: #ddd;
  font-size: 17px;
  border: none;
  cursor: pointer;
}

.main .search-container button:hover {
  background: #ccc;
}