.accordion__list {
  list-style: none;
  padding: 0;
  width: 100%;
  height: auto;
}
.accordion__list .__item > .accordion-button {
  background-color: #dbdbdb;
  color: #444;
  cursor: pointer;
  padding: 18px;
  width: 100%;
  border: none;
  text-align: left;
  outline: none;
  font-size: 15px;
  transition: 0.4s;
  position: relative;
  margin: 1px auto;
}
.accordion__list .__item > .accordion-button:after {
  content: '';
  position: absolute;
  right: 0;
  margin: auto 15px;
  width: 10px;
  height: 10px;
  border: 1px solid #000;
  transform: rotate(45deg);
  border-left: 0;
  border-top: 0;
  transition: 0.2s;
}
.accordion__list .__item > .accordion-button:hover {
  background-color: #848a91;
  color: #fff;    
}
.accordion__list .__item > .accordion-button + .inner {
  width: 100%;
  padding: 20px;
  background-color: white;
  height: 0;
  display: none;
  box-sizing: border-box;
  transition: all 0.4s ease-in-out;
}
.accordion__list .__item.active .accordion-button.active {
  background-color: #003f6c;
  color: #fff    
}
.accordion__list .__item.active .accordion-button.active:after {
  content: '';
  transform: rotate(-135deg);
  transition: 0.2s;
}
.accordion__list .__item.active .accordion-button.active + .inner {
  height: auto;
  display: block;
  transition: all 0.4s ease-in-out;
}