body{
    background: rgb(255, 255, 255);
    font-size:1em;
    font-family: Vazir;
    line-height: 180%
}

.div-1{
    width:85%;
    text-align:center;
    /*background: rgb(240, 240, 240);*/
    margin:auto;
    padding:10px;
    border-radius: 15px
}

.title-course{
    color: #b41684;
    text-align: center;
    margin-bottom: 5px;
}

.course-img{
    border-radius: 10px;
    margin-bottom: 20px;
}

.course-explain{
    color:black;
    font-size:1em
    margin-bottom: 10px;
}

.parts-count{
    font-size : 30px;
    text-align: right;
    color: gray;
}

.m2{
    margin-bottom: 10px;
}

.center{
    text-align: center;
}

.width-button{
    width: 40%;
}

.solid-border{
    border-style: solid;
}

.lime-green-border{
    border-color: limegreen;
}

.green-border{
    border-color: green;
}

.white{
    color: white;
}

.auto-margin{
    margin: auto
}

.my-q{
    width:30%;
    border-style: solid;
    border-color: orange;
    color: white;
    background-color:orange;
    margin-bottom: 5px;
}

.details {
  width: 50%;
  margin: 0 auto ;
  background: #272727;
  margin-bottom: .5rem;
  box-shadow: 0 .1rem 1rem -.5rem rgba(0,0,0,.4);
  border-radius: 5px;
  overflow: hidden;
  transition-duration: 0.6s;
  
}
            
.summary {
  padding: 1rem;
  display: block;
  background: #333;
  padding-left: 3rem;
  position: relative;
  cursor: pointer;
  transition-duration: 0.6s;
}
            
.summary:before {
  content: '';
  border-width: .4rem;
  border-style: solid;
  border-color: transparent transparent transparent #fff;
  position: absolute;
  top: 1.3rem;
  left: 1rem;
  transform: r
  
}

.details[open] > summary:before {
  transform: rotate(90deg);
  transition-duration: 0.6s;
}


.details summary::-webkit-details-marker {
  display:none;
  transition-duration: 0.6s;
}

.details > ul {
  padding-bottom: 1rem;
  margin-bottom: 0;
  transition-duration: 0.6s;
}

.details > summary {
  list-style: none;
  transition-duration: 0.6s;
}
.details > summary::-webkit-details-marker {
  display: none;
  transition-duration: 0.6s;
}

@keyframes details-show {
    from {
        opacity:0;
        transform: var(--details-translate, translateY(-0.5em));
    }
}

.details[open] > *:not(summary) {
  animation: details-show 550ms ease-in-out;
}

.details[close] > *:not(summary) {
  animation: details-show 550ms ease-in-out;
}