.accordion {
  color: #000;
  cursor: pointer;
  width: 100%;
  border: none;
  text-align: left;
  outline: none;
  font-size: 26pt;
  transition: 0.4s;
}

button.accordion{
  margin: 0;
  height: 75px;
}

.accordion img{
  float: right;
}

.active, .accordion:hover {
  background-color: #ccc;
}

.accordion:after {
  content: url(https://www.outstand.cl/protego/images/flecha3.png);
  float: right;
  margin-left: 5px;
}

.active:after {
  content: url(https://www.outstand.cl/protego/images/flecha3.png);
  transform: rotate(90deg);
}

.panel {
  padding: 0 18px;
  background-color: white;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.2s ease-out;
}