.accordion collapse {
  border: 0;
}

.accordion-button:focus {
  box-shadow: none;
  border: none;
}

.accordion-button:not(.collapsed) {
  background: none;
  color: #453e42;
  box-shadow: none;
  border-bottom: none;
}

.accordion-button::after {
  width: auto;
  height: auto;
  content: "+";
  font-size: 40px;
  background-image: none;
  font-weight: 100;
  color: #1EA896;
  /*transform: translateY(-4px);*/
}

.accordion-button:not(.collapsed)::after {
  width: auto;
  height: auto;
  background-image: none;
  content: "–";
  font-size: 40px;
  /*transform: translate(-4px, -5px);*/
  transform: rotate(0deg);
  margin-top: -3px;
  margin-right: 2px;
}

#portfolio .portfolio-item .portfolio-link .portfolio-hover {
  background: rgba(30, 168, 150, .9);
}