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David Walsh Tutorials

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    Fixing ‘vagrant up’ Errors

    When I'm working on MDN's source, kuma, I use a technology called Vagrant to do so. Vagrant helps to create an manage a virtual machine that hosts MDN locally. Occasionally, however, I get errors which prevent me from starting the...

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    The Truth About Code Review II

    Code review is an essential but sometimes funny part of creating an awesome product or open source project. Of course your project has standards and the developers are all relatively professional, but sometimes developers still don't quite believe in the same coding styles and methodologies.

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    YUI Compressor Media Query Issues

    I've been coding out the redesign for a responsive website and it's been a lot of fun...and a lot of media queries. A few of the media queries have multiple conditions so I have `and` sprinkled into them quite a bit. Everything was going...

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    Per-Project Whitespace with EditorConfig

    Standards can change from project to project.  Single quotes or double quotes?  MooTools, Dojo, or micro-frameworks?  And then the question that has started wars:  spaces or tabs?  I'm a tab guy myself but the team that I work on has set a two-space standard.  It's not...

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    CSS Clear Fix

    Clearing CSS floats is just as important to creating CSS structures as anything could be.  For years we would clear our floated elements by adding one element with the clear: both; style simple to perform the clear.  This practice was fine but it introduced elements into...

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    Mighty Deals: Bundle Storm: The Bundle of Bundles

    Mighty Deals does an awesome job putting together offers that feature highly useful tools at a much lower price than you would if you purchased each tool separately.  My favorite thus far was the Killer Photoshop Actions bundle -- I've spent hours adding filters to...

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    Using Font Awesome Icons without <i> Tags

    If you've not used glyph icon libraries like Font Awesome before, you're really missing out.  They're incredibly useful, flexible, and are easy to implement via markup.  The normal method for using font awesome is by using an <i> element with an icon-specific CSS class: This...

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    Remove Whitespace Between Inline-Block Elements

    I remember being a young developer during the Internet Explorer 6 days and desperately wanting IE to adopt display: inline-block.  The inline-block value is incredibly useful when wanting to control margin and padding on "inline" elements without the need to `block and float` them.  One problem...

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    Pure CSS Slide Up and Slide Down

    If I can avoid using JavaScript for element animations, I'm incredibly happy and driven to do so.  They're more efficient, don't require a JavaScript framework to manage steps, and they're more elegant.  One effect that is difficult to nail down with pure CSS is sliding up...

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    Generate a CSS Grid with Stylus

    I've jumped into Stylus over the past few moths and I love it.  I wouldn't say it's better or worse than SASS, it's just something a bit different.  One task I've recently completed is building the standard Mozilla grid and column structure...