<h1>
Текст заголовка
</h1>
body {
  max-width: 100px;
}
h1 {
  display: inline;
  padding: 0 10px;
  font-size: 30px;
  line-height: 30px;
  color: #fff;
  background-color: #ee1825;
  -webkit-box-decoration-break: clone;
  box-decoration-break: clone;
}

External CSS

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External JavaScript

This Pen doesn't use any external JavaScript resources.