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    <p>I've been looking for the same styling technique for a while. From a UI/UX standpoint - simplifying search forms to a single element makes a lot of sense in certain situations.</p> <p><em>Consider the example below:</em></p> <p><img src="https://i.stack.imgur.com/ninRd.png" alt="Search Form Example"></p> <p>When you approach it from a development standpoint the knee-jerk is to decide to style the form itself instead of the input elements. A transparent input[type=text] to the left, and a transparent .PNG submit button to the right and you've got a sharp looking search field.</p> <p>As you've discovered though, you give up the CSS style capabilities associated with :focus because the input field isn't the one controlling the background / color etc - the form element is instead.</p> <p>The form:focus selector would be a perfect way to handle that. Unfortunately, we've got to wait to CSS4 for that (thanks to matt3141 for the tid-bit).</p> <p>In the meantime, you have a few options available</p> <hr> <h2>Option 1 - Forgo the Clickable Submit Button</h2> <p>I usually try and avoid this if possible, but you have the option to forgo the submit button altogether. Style the text field as you intended, and use a background image with the position limited to the left or of the field right. When the user types in their query, and presses enter, you can still fire a GET action. The example image above uses this technique.</p> <p><em>Example: <a href="http://designdisease.com/" rel="nofollow noreferrer">http://designdisease.com/</a></em></p> <p>Pros: Easiest to set up.</p> <p>Drawbacks: Users who still click search buttons might be confused.</p> <hr> <h2>Option 2 - Use an Alternate Element to Style the Background</h2> <p>Your next option is to take advantage of the sibling selector and content tags as o.v. has so generously explained in his/her previous answer. This in effects adds a new element and styles it to act as a new background for a specified area when the :focus effect is applied to an input field.</p> <p><em>Example: <a href="http://jsfiddle.net/ovfiddle/PEK7h/2/" rel="nofollow noreferrer">http://jsfiddle.net/ovfiddle/PEK7h/2/</a></em></p> <p>Pros: Extendable to larger forms with multiple fields more easily.</p> <p>Drawbacks: The intensive selectors may not degrade as gracefully as we'd like.</p> <hr> <h2>Option 3 - Use Absolute Positioning to Stack the Elements</h2> <p>In situations where the text field will encompass the full width of the form, you can use a the position:absolute; attribute to simply load the submit button over top of the input element, and then a few css tweaks on the button to remove the background / border - giving the same effect as our example image above, but with added benefit of making it clickable.</p> <p><strong>Step One:</strong> Give the form a position - relative/absolute/fixed. </p> <p><strong>Step Two:</strong> Give the text field a width of 100%.</p> <p><strong>Step Three:</strong> Give the button an absolute position, and right position of 0.</p> <p>I've updated o.v.'s fiddle to incorporate the new technique:</p> <p><em>Example: <a href="http://jsfiddle.net/PEK7h/17/" rel="nofollow noreferrer">http://jsfiddle.net/PEK7h/17/</a></em></p> <p>Pro's: Degrades gracefully, gives us what we want in most single input field cases.</p> <p>Drawbacks: Not as easily extendable to large forms like o.v.'s fix is.</p> <p>--</p> <p>As you can see, each option has its own drawbacks - but if you know about them ahead of you can usually lessen their impact. Hope this helps!</p>
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    1. POHighlight active form with CSS?
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    1. USWill D. White
    1. USWill D. White
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    1. COThanks for the research. I really liked your Option 3 solution. It's still usable with more flexible sizes, I'd just have to put a containing div for the buttons position to absolute to (instead of the entire form) - which isn't ideal, but still pretty good while waiting for CSS4.
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    2. COI'm glad it helped! I've been using it just for search fields, but you're exactly right in that you could extend it to larger forms with a little creative positioning.
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