sentences:  HTML 5 introduces elements and attributes that reflect typical usage on modern websites.Some of them are semantic replacements for common uses of generic block () and inline () elements, for example (website navigation block), (usually referring to bottom of web page or to last lines of HTML code), or and instead of .Some deprecated elements from HTML 4.01 have been dropped, including purely presentational elements such as and , whose effects have long been superseded by the more capable Cascading Style Sheets.