<div class="container">
  <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Vel, repellendus.</p>
  <button>Hover me</button>
</div>

button {
  pointer-events: auto;
}

.container {
  pointer-events: none;
}
.container:hover p {
  transition: all .3s;
  color: #aaa;
}