query: CSS. Can't center class and it's ':before' element
positive_passages.docid: 663
positive_passages.text: How to horizontally center an element
negative_passages.docid: 66600
negative_passages.text: What does a star-preceded property mean in CSS?
negative_passages.docid: 133139
negative_passages.text: How do I add a css class to an Div element in JQuery?
negative_passages.docid: 103222
negative_passages.text: Can I change the height of an image in CSS :before/:after pseudo-elements?
negative_passages.docid: 5851
negative_passages.text: Which characters are valid in CSS class names/selectors?
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negative_passages.text: Center parent div with float children
negative_passages.docid: 76947
negative_passages.text: css3 nth of type restricted to class
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negative_passages.text: How do you easily horizontally center a  using CSS?
negative_passages.docid: 85574
negative_passages.text: How do I align an image to centre?
negative_passages.docid: 66431
negative_passages.text: What is the difference between id and class in CSS, and when should I use them?
negative_passages.docid: 10877
negative_passages.text: use :before and :after elements to fill remaining space of text element
negative_passages.docid: 56404
negative_passages.text: How to insert a line break before an element using CSS
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negative_passages.text: Centering my navigation menu links
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negative_passages.text: Keeping Images Centered using CSS
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negative_passages.text: How to center an unordered list?
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negative_passages.text: Placing items before \documentclass
negative_passages.docid: 53407
negative_passages.text: How to remove margin space around body or clear default css styles