html {
	padding-bottom: 30em;
	padding-bottom: calc(100vh - 30px);
}
img, video {
	margin-bottom: 1.5em;
	max-width: 325px;
}
h1, h2, h3 {
	font-weight: normal;
}
h1 { font-size: 2em; }
h2 { font-size: 1.5em; }
h3 { font-size: 1.25em; }
body {
	padding-top: 40px;
	padding-bottom: 40px;
	background-color: #f5f5f5;
	border-bottom: red dotted 30px;
}

.row {
	padding-bottom: 3em;
}

.btn-link {
	font-weight: 400!important;
}

.btn-link:hover, .btn-link:focus {
	text-decoration: none !important;
}

.card {
    background-color: transparent!important;
    background-clip: border-box;
    border: none!important;
}

.card-header {
    padding: .75rem 1.25rem;
    margin-bottom: 0;
    background-color: transparent!important;
    border-bottom: 1px solid rgba(0,0,0,.125)!important;
}

figure {
	margin: 0;
	display: flex;
	flex-flow: row wrap;
	justify-content: center;
}

summary > * {
	display: inline;
}

summary {
	padding-top: 0.5em;
}

/** */
nav[data-toggle="toc"] {
  top: 42px;
}

/* small screens */
@media (max-width: 768px) {
  /* override stickyness so that the navigation does not follow scrolling */
  nav[data-toggle="toc"] {
    margin-bottom: 42px;
    position: static;
  }

  /* PICK ONE */
  /* don't expand nested items, which pushes down the rest of the page when navigating */
  nav[data-toggle="toc"] .nav .active .nav {
    display: none;
  }
  /* alternatively, if you *do* want the second-level navigation to be shown (as seen on this page on mobile), use this */
  /*
  nav[data-toggle='toc'] .nav .nav {
    display: block;
  }
  */
}