.tab-group-openers {
  display: flex;
  justify-content: stretch;
  line-height: 40px;
  font-size: 16px;
  margin: 0;
}

.tab-opener {
  display: inline-block;
  flex: 1;
  text-align: center;
  padding: 0 13px;
  background-color: #b3b7c1;
  color: white;
  font-size: 20px;
  font-weight: 600;
  transition: color .2s ease, background .2s ease;
}
.tab-opener:not(.tab-visible):hover {
  cursor: pointer;
  background-color: transparent;
  color: rgb(52, 48, 58);
}

.tab-opener.tab-visible {
  background-color: transparent;
  color: rgb(52, 48, 58);
}