sliding text css

.slide-right {
  width: 100%;
  overflow: hidden;
  margin-left: 400px;
  max-width: 500px
}

.slide-right h2 {
  animation: 2s slide-right;
  animation-delay: 2s;
}

@keyframes slide-right {
  from {
    margin-left: -500px;
  }

  to {
    margin-left: 0%;
  }
}

<div class="slide-">
  <h2>Text that will slide in from the left</h2>
</div>