html {
  scroll-behavior: smooth;
}

.zero-block {
  position: relative;
  z-index: 1;
}

.zero-block::before,
.zero-block::after {
  content: '';
  display: block;
  height: 1px;
  width: 100%;
  background-color: transparent;
  pointer-events: none;
}

.zero-block::before {
  margin-top: -1px;
}

.zero-block::after {
  margin-bottom: -1px;
}