<div class="container">
  <p class="text center">Hello There</p>
  <p class="text center">Yohohoh</p>
</div>

.container {
  width: 500px;
  border: 1px solid;
  padding: 1rem;
  margin-inline: auto;
}

.text {
  font-size: 1.25rem;
  margin: 1rem 0;
  width: 100px;
}

.center {
  margin-left: auto;
  margin-right: auto;
}