<!DOCTYPE html>
<html>
<head>
<style>
span.highlight {
background-color: yellow;
}
</style>
</head>
<body>
<p>
<span class="highlight">This is a text.</span> This is a text. This is a text. This is a text. This is a text. This is a text. This is a text. This is a text. This is a text. <span class="highlight">This is a text.</span>
</p>
</body>
</html>