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// Refer:
// - http://nicolasgallagher.com/micro-clearfix-hack/
// - http://nicolasgallagher.com/better-float-containment-in-ie/
// - http://www.yuiblog.com/blog/2010/09/27/clearfix-reloaded-overflowhidden-demystified/

.clearfix() {
    &:before,
    &:after {
        content: " "; // 1
        display: table; // 2
    }

    &:after {
        clear: both;
    }

    *zoom: 1;
}