html{
  height: 100%;
}

body {
  display: -ms-flexbox;
  display: -webkit-box;
  display: flex;
  -ms-flex-align: center;
  -ms-flex-pack: center;
  -webkit-box-align: center;
  align-items: center;
  -webkit-box-pack: center;
  justify-content: center;
  padding-top: 40px;
  padding-bottom: 40px;
  background-color: #f5f5f5;
}

.hidden {
  display: none;
}

.form-signin {
  width: 100%;
  max-width: 630px;
  padding: 15px;
  margin: 0 auto;
}

.form-signin .checkbox {
  font-weight: 400;
}

.chapter-select {
  user-select: none;
  cursor: pointer;
}

.chapter-select li {
  border-top-right-radius: .25rem;
  border-top-left-radius: .25rem;
}

.chapter-select>input[type=checkbox]:checked+li {
  background-color: #007bff;
  color: #fff;
}

.chapter-select>input[type=checkbox]:checked+li .text-muted {
  color: #ffffffb5 !important;
}

.result-left {
  position: absolute;
  margin-left: -4rem;
  width: 2rem;
  margin-top: -3rem;
}

.result-left div {
  padding: 0.8rem;
  margin-bottom: 0.6rem;
}

#details {
  margin-top: 2rem;
}

#user {
  position: absolute;
  right: 1rem;
  top: 1rem;
}

#user .dropdown-menu {
  transform: translate3d(-15rem, 2.2rem, 0px);
  width: 17rem;
  padding: 1rem;
}

#profile-pic {
  height: 2rem;
}

#progress{
  background-color: #007bff;
  height: .5rem;
  position: absolute;
  top: 0;
  left: 0;
  transition: width 1s;
}

.chapter-select li {
  padding: 0.4rem 1rem;
}

.loading {
  width: 100%;
  height: 50%;
  display: flex;
  justify-content: center;
  align-items: center;

}