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<h2>Căn giữa hình ảnh</h2>
<p>Để căn giữa một ảnh, đặt margin-left và margin-right thành auto và làm
cho hình ảnh trở thành phần tử dạng block như đã nói ở lưu ý phía trên.</p>
<img src="https://webaffiliatevn.com/wp-content/uploads/2020/06/quan-tri-website-la-gi-1.png" alt="quản trị web" style="width:60%">