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copied!<h3>The joy of absolute positioning</h3> <pre><code> .on-margin { position: absolute; right: 10%; /* right margin from the containing box */ } </code></pre> <p><strong>How this works:</strong> With absolute positioning, you usually specify one of each <code>right</code>/<code>left</code> and <code>top</code>/<code>bottom</code> pairs of attributes. However, you don't have to: omitting <code>top</code> attribute leaves it at <code>auto</code>, that is, on the current line. </p> <p><strong>Clarification:</strong> after careful reading, I believe the CSS 2.1 specification doesn't mention that it's possible to specify <code>right: 10%; top: auto;</code> and that <em>the specification doesn't prescribe any behavior</em>.</p> <p><strong>Note:</strong> Earlier I specified <code>display:block</code> explicitly. In fact, per <a href="http://www.w3.org/TR/CSS2/visuren.html#dis-pos-flo" rel="nofollow noreferrer">specification</a>, <code>display</code> is automatically changed to <code>block</code> for most absolutely positioned elements. </p> <p><strong>Tested:</strong> Safari 4.0, Firefox 3.6a1pre, Camino 2.0b3, Opera 10.00b1 /Mac</p> <p><strong>References:</strong> <a href="http://www.w3.org/TR/CSS2/visuren.html#propdef-top" rel="nofollow noreferrer">CSS 2.1 visual model</a>, <a href="http://eldercare.vn/so/Floating%20Annotations.html" rel="nofollow noreferrer">my showcase page</a>, <a href="https://stackoverflow.com/questions/365371/css-two-columns/977358#977358">answer to a related question</a>.</p> <p><strong>Re: update.</strong> This perfectly works for large blocks. Note though that HTML doesn't like when <code>div</code>, header or similar 'big' tag is put inside <code>p</code> (and some browsers will break <code>p</code> in this case), so you might have to do some workaround around it. Showcase page updated with example.</p>

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