group-2.css

.group-child,
.group-item {
  position: absolute;
  top: 241px;
  left: 0;
  width: 1277px;
  height: 5.1px;
  object-fit: contain;
}
.group-item {
  top: 0;
  left: 2px;
}
.line-parent {
  width: 100%;
  position: relative;
  height: 246.1px;
}