<!DOCTYPE html>
<html>
<head>
<title>Заголовок документа</title>
<style>
:target {
border: 2px solid #1c87c9;
background-color: #eeeeee;
}
</style>
</head>
<body>
<h2>Пример селектора :target</h2>
<p>
<a href="#example1">Jump to Paragraph 1</a>
</p>
<p>
<a href="#example2">Jump to Paragraph 2</a>
</p>
<p id="example1">
<strong>Paragraph 1</strong>
</p>
<p id="example2">
<strong>Paragraph 2</strong>
</p>
</body>
</html>