JSFiddle - React, Tailwind, and code Playground

by downedcrane

HTML

<style>
.alert {
  padding: 15px;
  border: 1px solid #d6e9c6;
  border-radius: 4px;
  color: #3c763d;
  background-color: #dff0d8;
}
</style>

<script>
  let div = document.createElement('div');
  div.className = "alert";
  div.innerHTML = "<strong>Всем привет!</strong> Вы прочитали важное сообщение.";

  document.body.append(div);
</script>