.toggle {
  position: relative;
  /* other styles... */
}
.icon-arrow {
  position: absolute;
  right: 0;
}
.icon-toggle.fa-plus {
  display: none;
}
.toggle.active .icon-toggle.fa-plus {
  display: inline-block;
}
.toggle.active .icon-toggle.fa-minus {
  display: none;
}
.title-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.title-container h3 {
  margin: 0;
}