/* Use local icon assets instead of the legacy stylesheet's broken URLs. */
.myaccordion button[data-toggle="collapse"] span.minus::before {
  content: url("../images/svg/OpenedAccordion-MinusSign.svg");
}

.myaccordion button[data-toggle="collapse"] span.plus::before {
  content: url("../images/svg/ClosedAccordion-PlusSign.svg");
}