.accordion-container .accordion-title {
  position: relative;
  margin: 0;
  padding: 0.625em 0.625em 0.625em 2em;
  background-color: #000;
  font-size: 1.25em;
  font-weight: normal;
  color: #fff;
  cursor: pointer;
}
.accordion-container .accordion-title:hover,
.accordion-container .accordion-title:active,
.accordion-title.open { 
  background-color: #00aaa7;
}
.accordion-container .accordion-title::after {
  content: "";
  position: absolute;
  top: 25px;
  right: 25px;
  width: 0;
  height: 0;
  border: 8px solid transparent;
  border-top-color: #fff;
}
.accordion-container .accordion-title.open::after {
  content: "";
  position: absolute;
  top: 15px;
  border: 8px solid transparent;
  border-bottom-color: #fff;
}

/*CSS for CodePen*/

.accordion-content {
  padding-left: 2.3125em;
  border: 1px solid #0079c1;
}
.accordion-container {
  width: 300px;
  margin: 0 auto;
}