SemanSemantic-UItic-UI/rtl/minified/modules/accordion.min.css

.ui.accordion {
  width: 600px;
  max-width: 100%;
  overflow: hidden;
  font-size: 1rem;
  border-radius: .3125em;
  background-color: #FFF;
  -webkit-box-shadow: 0 0 0 1px rgba(0,0,0,.1);
  box-shadow: 0 0 0 1px rgba(0,0,0,.1);
}

.ui.accordion .title {
  cursor: pointer;
  margin: 0;
  padding: .75em 1em;
  color: rgba(0,0,0,.6);
  border-top: 1px solid rgba(0,0,0,.05);
  -webkit-transition: background-color .2s ease-out;
  transition: background-color .2s ease-out;
}

.ui.accordion .title:first-child {
  border-top: 0;
}

.ui.accordion .content {
  display: none;
  margin: 0;
  padding: 1.3em 1em;
}

.ui.accordion .title .dropdown.icon {
  display: inline-block;
  float: none;
  margin: 0 0 0 .5em;
  -webkit-transition: -webkit-transform .2s ease,opacity .2s ease;
  transition: transform .2s ease,opacity .2s ease;
  -webkit-transform: rotate(0deg);
  -ms-transform: rotate(0deg);
  transform: rotate(0deg);
}

.ui.accordion .title .dropdown.icon:before {
  content: '\f0da';
}

.ui.basic.accordion.menu {
  background-color: #FFF;
  -webkit-box-shadow: 0 0 0 1px rgba(0,0,0,.1);
  box-shadow: 0 0 0 1px rgba(0,0,0,.1);
}

.ui.basic.accordion.menu .title,
.ui.basic.accordion.menu .content {
  padding: 0;
}

.ui.basic.accordion {
  background-color: transparent;
  -webkit-box-shadow: none;
  box-shadow: none;
}

.ui.basic.accordion .title,
.ui.basic.accordion .title {
  background-color: transparent;
  border-top: 0;
  padding-right: 0;
  padding-left: 0;
}

.ui.basic.accordion .content {
  padding: .5em 0;
}

.ui.basic.accordion .active.title {
  background-color: transparent;
}

.ui.accordion .title:hover,
.ui.accordion .active.title {
  color: rgba(0,0,0,.8);
}

.ui.accordion .active.title {
  background-color: rgba(0,0,0,.1);
  color: rgba(0,0,0,.8);
}

.ui.accordion .active.title .dropdown.icon {
  -webkit-transform: rotate(90deg);
  -ms-transform: rotate(90deg);
  transform: rotate(90deg);
}

.ui.accordion .active.content {
  display: block;
}

.ui.fluid.accordion {
  width: 100%;
}