.accordion-single  {
  border-bottom: 1px solid #efefef;
  margin-top: 10px;
}

.accordion-single-title {
  border-top: 1px solid #efefef;
  padding: 20px;
  cursor: pointer;
  position: relative;
  font-size: 20px;
  margin: 0;
}

.accordion-single-title::after{
  content: "";
  position: absolute;
  right: 25px;
  top: 50%;
  transition: all 0.2s ease-in-out;
  display: block;
  width: 8px;
  height: 8px;
  border-top: solid 2px #999;
  border-right: solid 2px #999;
  transform: translateY(-50%) rotate(135deg);
}

.accordion-single-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height .3s ease-in-out;
  
}

.accordion-single-content p {
  padding: 20px;
}

.accordion-single-item.is-open .accordion-single-content  {
  max-height: 550px;
}

.accordion-single-item.is-open .accordion-single-title::after  {
  transform: translateY(-50%) rotate(315deg);
}

@media only screen and (max-width: 767px) {
    .accordion-single-content {
        padding-bottom: 0;
    }
    
    .accordion-single-content.is-open {
        padding-bottom: 8px;
    }
    
    .accordion-single-item .accordion-single-content {
        display: none;
    }
    
    .accordion-single-item.is-open .accordion-single-content {
        display: block;
    }
}