h1,
h2,
h3,
h4,
h5,
h6,
.h1,
.h2,
.h3,
.h4,
.h5,
.h6 {
  font-family: inherit;
  font-weight: 500;
  line-height: 1.1;
  color: inherit;
}

.collapse {
  display: none;
}
.collapse.in {
  display: block;
}

.collapsing {
  position: relative;
  height: 0;
  overflow: hidden;
  -webkit-transition-timing-function: ease;
       -o-transition-timing-function: ease;
          transition-timing-function: ease;
  -webkit-transition-duration: .35s;
       -o-transition-duration: .35s;
          transition-duration: .35s;
  -webkit-transition-property: height, visibility;
       -o-transition-property: height, visibility;
          transition-property: height, visibility;
}
.panel {
  margin-bottom: 20px;
  background-color: #fff;
  border: 1px solid transparent;
  border-radius: 4px;
  -webkit-box-shadow: 0 1px 1px rgba(0, 0, 0, .05);
          box-shadow: 0 1px 1px rgba(0, 0, 0, .05);
}
.panel-body {
  padding: 15px;
}
.panel-heading {
  padding: 10px 15px;
  border-bottom: 1px solid transparent;
  border-top-left-radius: 3px;
  border-top-right-radius: 3px;
}
.panel-heading > .dropdown .dropdown-toggle {
  color: inherit;
}
.panel-title {
  margin-top: 0;
  margin-bottom: 0;
  font-size: 16px;
  color: inherit;
}
.panel-group {
  margin-bottom: 20px;
}
.panel-group .panel {
  margin-bottom: 0;
  border-radius: 4px;
}
.panel-group .panel + .panel {
  margin-top: 5px;
}
.panel-group .panel-heading {
  border-bottom: 0;
}