What’s The Difference Between Bootstrap 3 and Bootstrap 4 Bootstrap 3 Source CSS Files is LESS. Bootstrap 4 Source CSS files Converted in SCSS. Bootstrap 3 have 4 grid system (col-xs-3, col-sm-3, col-md-3, col-lg-3). Bootstrap 4 have 5 grid system (.col-, .col-sm-3, .col-md-3, .col-lg-3, .col-xl-3). Bootstrap 4 has removed the xs from the […]
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