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<!DOCTYPE html>
<html>
<head>
<style>
textarea {
  resize: none;
}
</style>
</head>
<body>
<h1>Disable Resizing of Textarea</h1>
<p>Set the resize property to <strong>none</strong> to disable the resize option of textareas:</p>
<textarea rows="4" cols="50">
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</textarea>
</body>
</html>