style.css

<style>

  @import url(https://fonts.googleapis.com/css?family=Open+Sans:300);
body {
  background-color: "#91aac3";
  overflow: hidden;
}

.navbar-inverse {
  background-color: #2C3E50;
  border-color: #2C3E50;
}

.navbar-inverse .navbar-nav > .active > a,
.navbar-inverse .navbar-nav > .active > a:hover,
.navbar-inverse .navbar-nav > .active > a:focus {
  background-color: #7d3945;
}

.navbar-nav li a:hover, .navbar-nav > .active > a {
  color: #fff !important;
  background-color: #7d3945 !important;
}

.nav-tabs-custom > .nav-tabs > li.active {
  border-top-color: #7d3945;
}

.section.sidebar a:link, .section.sidebar  a:visited, .section.sidebar  a:hover, .section.sidebar  a:active {
  color:#7d3945;
}

</style>