.ecg-pulse {
  background-color: #0d9488;
  height: 2px;
  position: relative;
  width: 100%;
}
.ecg-pulse::before,
.ecg-pulse::after {
  content: "";
  position: absolute;
  top: -3px;
  width: 8px;
  height: 8px;
  background: #0d9488;
}
.ecg-pulse::before { left: 0; }
.ecg-pulse::after { right: 0; }

.hero-grid {
  background-image: linear-gradient(rgba(0, 0, 0, 0.55), rgba(15, 23, 42, 0.72));
}