.bl-tabs-nav {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border: 2px solid white;
  background-color: transparent;
  overflow: hidden;
  position: relative;
  padding: 0;
  list-style: none;
  max-width: 624px;
  height: 44px;
  width: 100%;
}

.bl-tabs-nav::before,
.bl-tabs-nav::after {
  content: "";
  position: absolute;
  width: 20px;
  height: 20px;
  background: #111;
  z-index: 2;
}

.bl-tabs-nav::before {
  top: 0;
  left: 0;
  clip-path: polygon(0 0, 100% 0, 0 100%);
}

.bl-tabs-nav::after {
  bottom: 0;
  right: 0;
  clip-path: polygon(100% 0, 100% 100%, 0 100%);
}

.bl-tab {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  color: white;
  background: transparent;
  cursor: pointer;
  transition: background-color 0.3s, color 0.3s;
  z-index: 3;
}

.bl-tab:last-child {
  border-right: none;
}

.bl-tab.active {
  background-color: white;
  color: black;
}