.contentx {
  background: #fff;
  border-radius: 3px;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.075), 0 2px 4px rgba(0, 0, 0, 0.0375);
  padding: 30px;
}

.panel-group {
  margin-bottom: 0;
}
.panel-group .panel {
  border-radius: 0;
  box-shadow: none;
}
.panel-group .panel .panel-heading {
  padding: 0;
}
.panel-group .panel .panel-heading h4 a {
  background: #f8f8f8;
  display: block;
  font-size: 15px;
  font-weight: bold;
  padding: 15px;
  text-decoration: none;
  transition: 0.15s all ease-in-out;
}
.panel-group .panel .panel-heading h4 a:hover, .panel-group .panel .panel-heading h4 a:not(.collapsed) {
  background: #fff;
  transition: 0.15s all ease-in-out;
}
.panel-group .panel .panel-heading h4 a:not(.collapsed) i:before {
  content: "";
}
.panel-group .panel .panel-heading h4 a i {
  color: #999;
}
.panel-group .panel .panel-body {
  padding-top: 0;
}
.panel-group .panel .panel-heading + .panel-collapse > .list-group,
.panel-group .panel .panel-heading + .panel-collapse > .panel-body {
  border-top: none;
}
.panel-group .panel + .panel {
  border-top: none;
  margin-top: 0;
}