Extend modernizr to check if minwidth is supported or not

Modernizr min-width extension

    Modernizr.addTest('minwidth', function() {
      var test = document.createElement('div'),
          root = document.documentElement.appendChild(document.createElement('body'));
          
      test.style.cssText = 'min-width:22px;padding:0;margin:0;position:absolute;top:0;left:0';
      root.appendChild(test);
      
      var ret = test.offsetWidth === 22;
            
      root.removeChild(test);
      document.documentElement.removeChild(root);
      
      return ret;
    });