body {
  font-family: "Roboto", sans-serif;
  min-width: 300px;
  background-color: #212121;
  color: #fff;
}

.container {
  max-width: 1000px;
}

.question-container {
  width: 100%;
  align-items: center;
  font-size: 1.2em;
  display: flex;
}

.question-nav {
  overflow-x: hidden;
  display: flex;
  padding: 10px 50%;
  position: relative;
  scroll-behavior: smooth;
  width: 100%;
  background: #333;
}

.question-nav-item {
  min-width: 40px;
  width: 40px;
  max-width: 40px;
  height: 40px;
  border-radius: 100%;
  background-color: #eee;
  color: #333;
  font-size: 14px;
  text-align: center;
  display: block;
  line-height: 42px;
  margin-right: 12px;
  user-select: none;
  -webkit-user-select: none;
  -moz-user-select: none;
  cursor: pointer;
  /* font-weight: 600; */
  transform: translateX(-50%);
}

.question-nav-item.active {
  line-height: 36px;
  border: 3px solid #ffc107;
  position: relative;
  background-color: #fff;
  font-weight: 600;
}

.question-nav-item.active::after {
  content: "";
  display: block;
  background: #212121;
  width: 10px;
  height: 10px;
  transform: rotate(45deg) translateX(-75%);
  left: 50%;
  position: absolute;
  top: 48px;
}

.question-nav::-webkit-scrollbar {
  display: none;
}

.question-nav {
  -ms-overflow-style: none;
  scrollbar-width: none;
}

#question-content {
  width: inherit;
  text-align: center;
  padding: 40px 0;
}

#question-content > p {
  text-align: center;
  width: 100%;
}

.btn-ans {
  width: 100%;
  font-size: 22px;
}

.btn-ans:focus,
.btn-ans:active {
  outline: none;
  box-shadow: none;
}

#question-text {
  font-size: 18px;
  color: #333;
  line-height: 1.3;
}

.bx {
  margin-right: 4px;
}

#btn-listen-question,
#btn-finish-quiz {
  display: inline-block;
}

#btn-listen-question:hover,
#btn-finish-quiz:hover {
  cursor: pointer;
  opacity: 0.8;
}

#btn-listen-question:active,
#btn-finish-quiz:active {
  opacity: 0.6;
}

.btn-secondary:hover {
  color: #fff;
  background-color: #6c757d;
  border-color: #6c757d;
}

.btn-success:hover {
  color: #fff;
  background-color: #28a745;
  border-color: #28a745;
}

.btn-danger:hover {
  color: #fff;
  background-color: #dc3545;
  border-color: #dc3545;
}

img.no-iteration {
  user-select: none;
  -moz-user-select: none;
  -webkit-user-drag: none;
  -webkit-user-select: none;
  -ms-user-select: none;
}

.bx-lg {
  font-size: 3em !important;
}

.no-link,
.no-link:hover,
.no-link:active,
.no-link:visited,
.no-link:focus {
  color: inherit !important;
  text-decoration: inherit !important;
}

.container {
  padding: 0 8px !important;
}

.no-select {
  user-select: none;
  -webkit-user-select: none;
  -moz-user-select: none;
}

.cursor-pointer {
  cursor: pointer !important;
}

.bg-grey-hover {
  transition: background-color 0.25s;
}

.bg-grey-hover:hover {
  background-color: #eee !important;
}

.view-img {
  cursor: pointer !important;
}