• <h1>…</h1> to <h6>…</h6> – Document headings.
• <div>…</div> – Container for flow content.
• <p>…</p> – Paragraph of text.
• <header>…</header> – Introductory links (HTML5).
• <nav>…</nav> – Navigational links (HTML5).
• <article>…</article> – Self contained, re-usable composition e.g. blog post (HTML5).
• <section>…</section> – Generic section of a document/article (HTML5).
• <aside>…</aside> – Related content e.g. sidebar (HTML5).
• <footer>…</footer> – Footer text (HTML5).
• <blockquote>…</blockquote> – Block of quotation.
• <audio>…</audio> – Sound (HTML5).
• <video>…</video> – Embed video (HTML5).
• <figure>…</figure> – Encapsulate an image/illustration (HTML5).
• <figcaption>…</figcaption> – Caption associated with a figure.
• <form>…</form> – Contains elements for data input.

• <span>…</span> – Inline container.
• <q>…</q> – Inline quotation.
• <cite>…</cite> – Title of some work.
• <strong>…</strong> – Give text strong importance.
• <em>…</em> – Stress emphasis.
• <a>…</a> – Hyperlinks.
• <img /> – Images.

• <input /> – Text input element.
• <textarea>…</textarea> – Multiline plain text editing.
• <select><option>…</option>…</select> – Present a menu of options.
• <fieldset>…</fieldset> – Group input elements.
• <legend>…</legend> – Caption for fieldset.
• <label>…</label> – Caption for input element.

• float – left, right.
• clear – left, right, both.
• border-radius – top-left top-right bottom-left bottom-right (length values like em, pixels etc).
• margin – top right bottom left (width values).
• border – width style color.
• padding – top right bottom left.
• width – width-value.
• height – height-value.

• position:
  • static – default behavior, in the flow.
  • relative – relative parent element, original space reserved, in the flow.
  • absolute – out of flow.
  • fixed – relative to screen, does not move.

• font-family – family-or-generic-name.
• font-size – length-value.
• font-style – normal, italic, oblique.
• font-variant – small-caps, normal.
• font-weight – normal, bold.
• line-height – normal, height-value.

• text-align – left, right, center, justify.
• text-decoration – none, underline, overline, line-through, blink.
• text-indent – length-value.
• text-shadow – color, x-offset, y-offset.
• text-transform – capitalize, uppercase, lowercase.

• background-color – color.
• background-image – url("value").
• background-repeat – repeat, repeat-x, repeat-y, no-repeat.
• background-position – x-offset y-offset.

• list-style-type – none, circle, disc, armenian etc.
• list-style-position – inside, outside.

• display – none, inline, block.

See excellent tutorials at:

• http://www.htmldog.com/guides/
• http://learn.shayhowe.com/html-css/

[Previously published here]