react-scrollable-accordion/dist/styles.css

A scrollable list/accordion component with sticky headers

.ListItem,
.ListHeader {
  align-items: center;
  border-bottom: 1px solid #e9ecef;
  box-sizing: border-box;
  display: flex;
  justify-content: flex-start;
  padding: 0.8rem 0 0 0.8rem;
  position: relative;
  text-align: left;
  width: 100%;
}

.ListHeader {
  background-color: white;
  border: none;
  box-sizing: border-box;
  cursor: pointer;
  font-size: 0.8rem;
  font-weight: bold;
  margin: 0;
  padding: 0.6rem 0.8rem;
  text-align: center;
  z-index: 1;
}