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POCenter <div> vertically and horizontally problems
 

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  1. POCenter <div> vertically and horizontally problems
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    <p>I am trying to center the divs with the class <code>spinner</code>, they are all within <code>&lt;li&gt;</code> tags.</p> <p>The divs I am trying to center contain animated loaders using spin.js. </p> <p>I can not seem to get the style <code>top: -50%</code> to work correctly, but if I use firebug and remove the style and add it again it seems to work.</p> <p>Hopefully some one can see were I am going wrong.</p> <p><strong>EDITED</strong></p> <p>Flexslider will create the divs that need centering. </p> <p>Below is a working example.</p> <pre><code>&lt;!DOCTYPE html&gt; &lt;html lang="en"&gt; &lt;head&gt; &lt;meta content="charset=utf-8"&gt; &lt;title&gt;Gallery&lt;/title&gt; &lt;link rel="stylesheet" href="http://flexslider.woothemes.com/css/flexslider.css" type="text/css" media="screen" /&gt; &lt;style type="text/css"&gt; body { background-color: #222222; margin-top: 20px; margin-bottom: 20px; } .copyright { font-family: Arial, Helvetica, sans-serif; font-size: 12px; color: #999; } a { font-size: 12px; color: #999; } .flexslider .slides il { margin-right: 10px; } #gallery_wrap { margin-left: auto; margin-right: auto; width: 713px; } #slider, #carousel { background-color: #000000; border: 4px solid #000000; } #slider { margin-bottom: 10px; } #slideshow_controls { margin-left: 5px; margin-bottom: 5px; } #carousel img { height: 70px; } #slider img { max-width: 713px; max-height: 550px; } #carousel_wrap { width: 713px; } #carousel .slides &gt; li { margin-right: 5px; cursor: pointer; } #slideshow_controls img { width: 40px; height: 40px; cursor: pointer; } .spinner { position: fixed; top: -50%; left: 50%; } &lt;/style&gt; &lt;/head&gt; &lt;body&gt; &lt;div id="gallery_wrap"&gt; &lt;div id="slider" class="flexslider"&gt; &lt;ul class="slides"&gt; &lt;li&gt; &lt;img src="http://ichef.bbci.co.uk/naturelibrary/images/ic/credit/640x395/l/la/lake/lake_1.jpg" /&gt; &lt;/li&gt; &lt;li&gt; &lt;img src="http://aspiringbackpacker.com/wp-content/uploads/2012/10/plitvice1.jpg" /&gt; &lt;/li&gt; &lt;/ul&gt; &lt;/div&gt; &lt;div id="slideshow_controls"&gt;&lt;img title="Play slide show" src="./images/play_white_btn.png" /&gt;&lt;/div&gt; &lt;div id="carousel_wrap"&gt; &lt;div id="carousel" class="flexslider"&gt; &lt;ul class="slides"&gt; &lt;li&gt; &lt;img src="http://ichef.bbci.co.uk/naturelibrary/images/ic/credit/640x395/l/la/lake/lake_1.jpg" /&gt; &lt;/li&gt; &lt;li&gt; &lt;img src="http://aspiringbackpacker.com/wp-content/uploads/2012/10/plitvice1.jpg" /&gt; &lt;/li&gt; &lt;/ul&gt; &lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;!-- jQuery --&gt; &lt;script src="//ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"&gt;&lt;/script&gt; &lt;!-- FlexSlider --&gt; &lt;script defer src="http://flexslider.woothemes.com/js/jquery.flexslider.js"&gt;&lt;/script&gt; &lt;!-- Spin.js --&gt; &lt;script src="http://fgnass.github.io/spin.js/dist/spin.js"&gt;&lt;/script&gt; &lt;!--&lt;script src="http://fgnass.github.io/spin.js/jquery.spin.js"&gt;&lt;/script&gt;--&gt; &lt;script type="text/javascript"&gt; $(window).load(function(){ var opts = { lines: 11, // The number of lines to draw length: 20, // The length of each line width: 10, // The line thickness radius: 18, // The radius of the inner circle corners: 1, // Corner roundness (0..1) rotate: 0, // The rotation offset direction: 1, // 1: clockwise, -1: counterclockwise color: '#FFF', // #rgb or #rrggbb speed: 1, // Rounds per second trail: 60, // Afterglow percentage shadow: false, // Whether to render a shadow hwaccel: false, // Whether to use hardware acceleration className: 'spinner', // The CSS class to assign to the spinner zIndex: 2e9, // The z-index (defaults to 2000000000) top: '100', // Top position relative to parent in px left: 'auto' // Left position relative to parent in px }; var spinner = new Spinner(opts).spin(); $('#slider li').append(spinner.el); var opts2 = { lines: 11, // The number of lines to draw length: 10, // The length of each line width: 5, // The line thickness radius: 10, // The radius of the inner circle corners: 1, // Corner roundness (0..1) rotate: 0, // The rotation offset direction: 1, // 1: clockwise, -1: counterclockwise color: '#FFF', // #rgb or #rrggbb speed: 1, // Rounds per second trail: 60, // Afterglow percentage shadow: false, // Whether to render a shadow hwaccel: false, // Whether to use hardware acceleration className: 'spinner', // The CSS class to assign to the spinner zIndex: 2e9, // The z-index (defaults to 2000000000) top: 'auto', // Top position relative to parent in px left: 'auto' // Left position relative to parent in px }; var spinner2 = new Spinner(opts2).spin(); $('#carousel li').append(spinner2.el); $('#carousel').flexslider( { animation: "slide", controlNav: false, animationLoop: false, slideshow: false, itemWidth: 114, itemMargin: 5, asNavFor: '#slider' }); $('#slider').flexslider( { animation: "slide", controlNav: false, animationLoop: false, slideshow: false, sync: "#carousel" }); }); &lt;/script&gt; &lt;/body&gt; &lt;/html&gt; </code></pre> <p>Any help would be great.</p>
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    1. COFor starters I don't see any divs with class="spinner".
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    2. CO@Unipartisandev Sorry, flexslider will create this once the page loads, this is why I am having problems I think. I have gave a working example above.
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