<del> for deleted content
The <del> element represents text that has been removed. The <del> element has local attributes cite and datetime.
The cite attribute specifies a URL that explains why the text was deleted, and the datetime attribute specifies when the modification was made.
<!DOCTYPE HTML>
<html>
<head>
<title>Example</title>
</head>
<body>
<del>deleted <mark>deleted in mark</mark> </del>
</body>
</html>