body {
  font-family: 'Maitree', serif;
}

.hero-section {
  height: 400px;
  width: 100%;
  background-image: url('../images/book.jpg');
  background-attachment: fixed;
  background-position: center;
  background-repeat: no-repeat;
  background-size: cover;
}

.tutorial-section {
  margin-top: 50px;
}

.title {
  position: absolute;
  top: 150px;
  color: white;
  text-shadow: 0px 0px 25px black;
  width: 100%;
  text-align: center;
}

.reg-header {
  color: #8064a2;
}

.form-control.highlight {
  border-color: #fc3 !important;
  box-shadow: 0 1px 1px rgba(0, 0, 0, 0.075) inset, 0 0 8px #fc3 !important;
  outline: 0 none !important;
}

.btn-group > .dropdown > .btn:not(:last-child) {
  border-top-right-radius: 0;
  border-bottom-right-radius: 0;
  border-right: 0;
}

#hero-notification {
  z-index: 99;
  position: fixed;
  right: 64px;
  top: 96px;
  max-width: 396px;
  min-height: 96px;
  background: #fff;
  border: 1px solid #dadada;
  border-radius: 3px;

  -webkit-box-shadow: 0 3px 6px rgba(0, 0, 0, 0.16),
    0 3px 6px rgba(0, 0, 0, 0.23);

  box-shadow: 0 3px 6px rgba(0, 0, 0, 0.16), 0 3px 6px rgba(0, 0, 0, 0.23);
}

#hero-notification > div {
  width: 100%;
  height: 100%;
  position: relative;
}

#hero-notification .content {
  padding: 16px;
  margin: 0;
}

#hero-notification .header {
  color: #fff;
  background-color: #007bff;
  padding: 24px 16px;
}

#hero-notification hr {
  margin: 0;
}

#hero-notification .actions {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-pack: end;
  -ms-flex-pack: end;
  justify-content: flex-end;
}

#hero-notification .actions {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-pack: end;
  -ms-flex-pack: end;
  justify-content: flex-end;
  padding: 8px 16px;
}

#hero-notification .actions > .action:nth-child(n + 2) {
  margin-left: 24px;
}

#hero-notification .action {
  padding: 8px;
  cursor: pointer;
  -webkit-transition: 250ms;
  -o-transition: 250ms;
  transition: 250ms;
}

#hero-notification .action:active {
  background: #eaeaea;
}

@media (min-width: 768px) {
  .bd-navbar {
    position: -webkit-sticky;
    position: sticky;
    top: 0;
    z-index: 1020;
  }
}

.bd-navbar {
  min-height: 4.5rem;
  background-color: #563d7c;
  box-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.05),
    inset 0 -1px 0 rgba(0, 0, 0, 0.1);
}

.spx-m {
  width: 5rem;
}

.bd-content > h2:not(:first-child) {
  margin-top: 3rem;
}
.bd-content > h2[id],
.bd-content > h3[id],
.bd-content > h4[id] {
  pointer-events: none;
}
.bd-content > h2 {
  font-size: 2rem;
}

.bd-content > h2[id]::before,
.bd-content > h3[id]::before,
.bd-content > h4[id]::before {
  display: block;
  height: 6rem;
  margin-top: -6rem;
  content: '';
}

.bd-content-title {
  display: block;
  pointer-events: auto;
}

.anchorjs-link {
  opacity: 0;
  color: rgba(0, 123, 255, 0.5);
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  text-decoration: none;
  transition: color 0.15s ease-in-out, opacity 0.15s ease-in-out;
  text-decoration: none;
  background-color: transparent;
}
[data-anchorjs-icon]::after {
  content: attr(data-anchorjs-icon);
}
.bd-content-title:hover .anchorjs-link {
  opacity: 1;
}
.anchorjs-link:hover {
  color: #007bff;
  text-decoration: none;
}

.table.table-over-header thead::before {
  content: '';
  height: 3rem;
  display: block;
}
.table.table-over-header thead > tr:first-child > th {
  position: relative;
}
.table .over-th {
  top: -3rem;
  position: absolute;
}
.table .over-th[class*=' pin-'] {
  white-space: nowrap;
}
.table .over-th.pin-start {
  left: 0;
  right: auto;
}
.table .over-th.pin-end {
  left: auto;
  right: 0;
}

.nav-link.active.nav-link-secondary,
.show.nav-link-secondary > .nav-link {
  color: #212529;
  background-color: #f8f9fa;
}

a.nav-link-secondary {
  color: #212529;
  text-decoration: none;
  background-color: transparent;
}