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HTML

              
                <h1 class="text-center">Foundation 5</h1>
<h2 class="text-center">Resize the window to see the grid that's being used.</h2>
<hr>

<!--SMALL GRID-->
<div class="row text-center show-for-small-only">        
  <h3>At this point, the window width is up to 640px <strong></strong>. You'll use Foundation's grid for <strong class="bg-color">small screens</strong>.</h3>
  <h4>The size of each row can't exceed the 1000px.</h4>
  <hr>
  <h4>Each row can have up to 12 columns.</h4>
  <hr>
  <h4>For default grid, the class prefix you can use to set the size of your columns is <code>small-#</code>.</h4>
  <p>For instance, if you want two equal-sized columns, you'll use the <code>small-6</code> class.</p>
  <p>Keep in mind that in case you'll not specify a column size for small screens, they will be appearing stacked. That means, they will occupy the full width of their container (<code>small-12</code>).</p>
  <hr>
  <h4>For block grid, the class prefix you can use to set the size of your columns is <code>small-block-grid-#</code>.</h4>
  <p>For instance, if you want two equal-sized columns, you'll use the <code>small-block-grid-6</code> class.</p>
  <p>Using <strong>offset</strong> classes (for example, <code>small-offset-2</code>) you can center or move columns to the right. These classes change the <code>margin-left</code> value of each column.</p>
  <p>Using <strong>push & pull</strong> classes (for example, <code>small-push-2</code>) you can move columns to the left and right respectively. These classes change the <code>left</code> and <code>right</code> values of each column.</p>
  <p>Using <strong>visibility</strong> classes (for example, <code>hide-for-small-only</code>) you can adjust the content that will be appearing in this viewport size.</p>
  <p>Demo by George Martskoukos. <a href="http://www.sitepoint.com/grid-system-comparison-bootstrap-vs-foundation" target="_blank">See article</a>.</p>
</div>

<!--MEDIUM GRID-->
<div class="row text-center show-for-medium-only">
  <h3>At this point, the window width is 641px and up <strong></strong>. You'll use Foundation's grid for <strong class="bg-color">medium screens</strong>.</h3>
  <h4>The size of each row can't exceed the 1000px.</h4>
  <hr>
  <h4>Each row can have up to 12 columns.</h4>
  <hr>
  <h4>For default grid, the class prefix you can use to set the size of your columns is <code>medium-#</code>.</h4>
  <p>For instance, if you want two equal-sized columns, you'll use the <code>medium-6</code> class.</p>
  <p>Keep in mind that in case you'll not specify a column size for medium screens, they will inherit the styles from the small screens.</p>
  <hr>
  <h4>For block grid, the class prefix you can use to set the size of your columns is <code>medium-block-grid-#</code>.</h4>
  <p>For instance, if you want two equal-sized columns, you'll use the <code>medium-block-grid-6</code> class.</p>
  <hr>
  <p>Using <strong>offset</strong> classes (for example, <code>medium-offset-2</code>) you can center or move columns to the right. These classes change the <code>margin-left</code> value of each column.</p>
  <p>Using <strong>push & pull</strong> classes (for example, <code>medium-push-2</code>) you can move columns to the left and right respectively. These classes change the <code>left</code> and <code>right</code> values of each column.</p>
  <p>Using <strong>visibility</strong> classes (for example, <code>show-for-medium-only</code>) you can adjust the content that will be appearing in this viewport size.</p>
  <hr>
  <p>Demo by George Martskoukos. <a href="http://www.sitepoint.com/grid-system-comparison-bootstrap-vs-foundation" target="_blank">See article</a>.</p>
</div>

<!--LARGE GRID-->
<div class="row text-center show-for-large-only">
  <h3>At this point, the window width is 1025px and up <strong></strong>. You'll use Foundation's grid for <strong class="bg-color">large screens</strong>.</h3>
  <h4>The size of each row can't exceed the 1000px.</h4>
  <hr>
  <h4>Each row can have up to 12 columns.</h4>
  <hr>
  <h4>For default grid, the class prefix you can use to set the size of your columns is <code>large-#</code>.</h4>
  <p>For instance, if you want two equal-sized columns, you'll use the <code>large-6</code> class.</p>
  <p>Keep in mind that in case you'll not specify a column size for large screens, they will inherit the styles from the previous screens.</p>
  <hr>
  <h4>For block grid, the class prefix you can use to set the size of your columns is <code>large-block-grid-#</code>.</h4>
  <p>For instance, if you want two equal-sized columns, you'll use the <code>large-block-grid-6</code> class.</p>
  <hr>
  <p>Using <strong>offset</strong> classes (for example, <code>large-offset-2</code>) you can center or move columns to the right. These classes change the <code>margin-left</code> value of each column.</p>
  <p>Using <strong>push & pull</strong> classes (for example, <code>large-push-2</code>) you can move columns to the left and right respectively. These classes change the <code>left</code> and <code>right</code> values of each column.</p>
  <p>Using <strong>visibility</strong> classes (for example, <code>show-for-large-only</code>) you can adjust the content that will be appearing in this viewport size.</p>
  <hr>
  <p>Demo by George Martskoukos. <a href="http://www.sitepoint.com/grid-system-comparison-bootstrap-vs-foundation" target="_blank">See article</a>.</p>
</div>

<!--XLARGE GRID-->
<div class="row text-center show-for-xlarge-only">
  <h3>At this point, the window width is 1441px and up <strong></strong>.</h3>
  <p>In order to be able to use Foundation's grid for <strong>xlarge devices</strong> you have to activate it. To do this, uncomment and set the <code>$include-xl-html-grid-classes</code> and <code>$include-xl-html-block-grid-classes</code> variables to <code>true</code>. These variables can be found in the <code>_settings.scss</code> partial.</p>
  <p>Keep in mind that in case you'll not specify a column size for xlarge screens, they will inherit the styles from the previous screens.</p>
  <p>Demo by George Martskoukos. <a href="http://www.sitepoint.com/grid-system-comparison-bootstrap-vs-foundation" target="_blank">See article</a>.</p>
</div>

<!--XXLARGE GRID-->
<div class="row text-center show-for-xxlarge-only">
  <h3>At this point, the window width is 1921px and up <strong></strong>.</h3>
  <p>In order to be able to use Foundation's grid for <strong>xxlarge devices</strong> you have to activate it. To do this, uncomment and set the <code>$include-xl-html-grid-classes</code> and <code>$include-xl-html-block-grid-classes</code> variables to <code>true</code>. These variables can be found in the <code>_settings.scss</code> partial.</p>
  <p>Keep in mind that in case you'll not specify a column size for xxlarge screens, they will inherit the styles from the previous screens.</p>
  <p>Demo by George Martskoukos. <a href="http://www.sitepoint.com/grid-system-comparison-bootstrap-vs-foundation" target="_blank">See article</a>.</p>
</div>
              
            
!

CSS

              
                @import url(https://fonts.googleapis.com/css?family=Source+Sans+Pro:400,700);

body, h1, h2, h3, h4 {
  font-family: 'Source Sans Pro', sans-serif;
}

h1 {
  font-weight: 700;
}

a {
  color: white;
}

h3 {
  margin-bottom: 25px;
}

.bg-color {
  background: #bdbd00;
  padding: 3px;
}

h4, p {
  margin-bottom: 15px;
}

@media only screen and (max-width:40em) {
  body {
    background: lightblue;
  }
}

@media only screen and (min-width: 40.063em) {
  body {
    background: #4baac8;
  }
}

@media only screen and (min-width: 64.063em) {
  body {
    background: LightSteelBlue;
  }
}

@media only screen and (min-width: 90.063em) {
  body {
    background: #688ec0;
  }
}

@media only screen and (min-width: 120.063em) {
  body {
    background: #cdd9ea;
  }
}
              
            
!

JS

              
                $(window).on('load resize', function(){
  var $browserWidth = $(window).width();
  $('h3 strong:first-child').text('(' + $browserWidth + 'px)').css('color', 'white');
});
              
            
!
999px

Console