HTML Cheatsheet
Complete HTML5 reference with all elements and attributes
Document Structure
<!DOCTYPE>, <html>, <head>, <body>, <meta>, <title>, <link>, <script>Text Elements
<h1>-<h6>, <p>, <span>, <strong>, <em>, <br>, <hr>, <blockquote>Lists
<ul>, <ol>, <li>, <dl>, <dt>, <dd>Forms
<form>, <input>, <textarea>, <select>, <button>, <label>, <fieldset>