<div class="container">
  <div class="username">bytefish</div>
  <p class="profile">Frontend Enginer, UX Designer </p>
</div>

.container {
  border: 2px solid red;
  width: 200px;
  height: 60px;
}
.profile {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}