.chapter {
  border-radius: 0;
  border-color: #dfdfdf;
}
.video-container {
  margin-bottom: 10px;
}

.chapter a {
  color: #c31617;
  text-decoration: none;
}
.chapter a:hover {
  color: #c31617 !important;
  text-decoration: underline;
}

.panel-default>.panel-heading {
  background-color: #fbefef;
  background-image:none;
}
.chapter h4 {
  margin-top:20px;
}
.pdf-container {
  width:100%;height:600px;
}
.course {
  margin-top: 10px;
}
.course-icon {
  padding-right: 10px;
  padding-left: 10px;
  font-size: 20px;
  background-color: #153f8b;
  color: #fff;
  line-height: 40px;
  width:45px;
  text-align: center;
}

.course-title {
  line-height: 40px;
  background-color: #dfdfdf;
}
.course-title > span {
  padding-left: 15px;
}