.panel-group .panel {
  border: none;
  border-radius: 0px;
}
.panel-heading,
.panel-body {
  background-color: #333333 !important;
  color: #ffffff !important;
  border: none;
  border-radius: 0px;
}
.panel-group .panel+.panel {
  margin-top: 10px;
}
.panel-heading a { 
  text-decoration: none;
}
.panel-heading .accordion-toggle:after {
  font-family: 'Glyphicons Halflings';
  content: "\002b";
  float: right;
  color: white;
}
.panel-heading .accordion-toggle.collapsed:after {
  content: "\002b";
}
.underline {
  text-decoration: underline !important;
}
.accordion-toggle:after {
  transform: rotate(0deg);
  transition: transform 0.3s;
}
.accordion-toggle.clicked:after {
  transform: rotate(45deg);
  transition: transform 0.3s;
}