.nav .nav-item button.active {
  background-color: transparent;
  color: #250940 !important;
}
.nav .nav-item button.active::after {
  content: "";
  border-right: 4px solid #250940;
  height: 100%;
  position: absolute;
  right: -1px;
  top: 0;
  border-radius: 5px 0 0 5px;
}