<h3 class="radikalwp-cs-tx-type">در حال نوشتن داستان شما<//h3>

.radikalwp-cs-tx-type {
  margin: 0;
  font-family: inherit;
  font-size: 24px;
  font-weight: 800;
  color: #0f172a;
}
.radikalwp-cs-tx-type::after {
  content: '';
  display: inline-block;
  width: 2.5px;
  height: 1.05em;
  margin-right: 4px;
  background: #2563eb;
  vertical-align: -0.15em;
  animation: radikalwp-tx-caret 1.1s step-end infinite;
}
@keyframes radikalwp-tx-caret {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}