xHTML究竟有多少个标签？绝大部分人都不能得出一个正确的答案，现在就有个机会，自己数数。答案：91个！

　　a, abbr, b, base, body, br, dd, div, dl, dt, em, fieldset, form, h1, h2, h3, h4, h5, h6, head, hr, html, i, img, li, link, meta, ol, p, s, script, span, strong, style, title, u, ul, acronym, address, applet, area, basefont, bdo, big, blockquote, button, caption, center, cite, code, col, colgroup, del, dfn, dir, font, frame, frameset, iframe, input, ins, isindex, kbd, label, legend, map, menu, noframes, noscript, object, optgroup, option, param, pre, q, samp, select, small, strike, sub, sup, table, tbody, td, textarea, tfoot, th, thead, tr, tt, var

常见的块状元素与内联元素