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/* 
The CSS code that is required for the content column classes is included in Genesis, as well as the most current version of child themes. 
*/

/* Column Classes
    Link: http://twitter.github.io/bootstrap/assets/css/bootstrap-responsive.css
--------------------------------------------- */

.five-sixths,
.four-sixths,
.one-fourth,
.one-half,
.one-sixth,
.one-third,
.three-fourths,
.three-sixths,
.two-fourths,
.two-sixths,
.two-thirds {
    float: left;
    margin-left: 2.564102564102564%;
}

.one-half,
.three-sixths,
.two-fourths {
    width: 48.717948717948715%;
}

.one-third,
.two-sixths {
    width: 31.623931623931625%;
}

.four-sixths,
.two-thirds {
    width: 65.81196581196582%;
}

.one-fourth {
    width: 23.076923076923077%;
}

.three-fourths {
    width: 74.35897435897436%;
}

.one-sixth {
    width: 14.52991452991453%;
}

.five-sixths {
    width: 82.90598290598291%;
}

.first {
    clear: both;
    margin-left: 0;
}

<!-- 2-Columns -->

<div class="one-half first">This is an example of a WordPress post, you could edit this to put information about yourself or your site so readers know where you are coming from. You can create as many posts as you like in order to share with your readers what exactly is on your mind.</div>
<div class="one-half">This is an example of a WordPress post, you could edit this to put information about yourself or your site so readers know where you are coming from. You can create as many posts as you like in order to share with your readers what exactly is on your mind.</div>

<!-- 3-Columns -->

<div class="one-third first">This is an example of a WordPress post, you could edit this to put information about yourself or your site so readers know where you are coming from. You can create as many posts as you like in order to share with your readers what exactly is on your mind.</div>
<div class="one-third">This is an example of a WordPress post, you could edit this to put information about yourself or your site so readers know where you are coming from. You can create as many posts as you like in order to share with your readers what exactly is on your mind.</div>
<div class="one-third">This is an example of a WordPress post, you could edit this to put information about yourself or your site so readers know where you are coming from. You can create as many posts as you like in order to share with your readers what exactly is on your mind.</div>

<!-- 4-Columns -->

<div class="one-fourth first">This is an example of a WordPress post, you could edit this to put information about yourself or your site so readers know where you are coming from. You can create as many posts as you like in order to share with your readers what exactly is on your mind.</div>
<div class="one-fourth">This is an example of a WordPress post, you could edit this to put information about yourself or your site so readers know where you are coming from. You can create as many posts as you like in order to share with your readers what exactly is on your mind.</div>
<div class="one-fourth">This is an example of a WordPress post, you could edit this to put information about yourself or your site so readers know where you are coming from. You can create as many posts as you like in order to share with your readers what exactly is on your mind.</div>
<div class="one-fourth">This is an example of a WordPress post, you could edit this to put information about yourself or your site so readers know where you are coming from. You can create as many posts as you like in order to share with your readers what exactly is on your mind.</div>

<!-- 6-Columns -->

<div class="one-sixth first">This is an example of a WordPress post, you could edit this to put information about yourself or your site so readers know where you are coming from. You can create as many posts as you like in order to share with your readers what exactly is on your mind.</div>
<div class="one-sixth">This is an example of a WordPress post, you could edit this to put information about yourself or your site so readers know where you are coming from. You can create as many posts as you like in order to share with your readers what exactly is on your mind.</div>
<div class="one-sixth">This is an example of a WordPress post, you could edit this to put information about yourself or your site so readers know where you are coming from. You can create as many posts as you like in order to share with your readers what exactly is on your mind.</div>
<div class="one-sixth">This is an example of a WordPress post, you could edit this to put information about yourself or your site so readers know where you are coming from. You can create as many posts as you like in order to share with your readers what exactly is on your mind.</div>
<div class="one-sixth">This is an example of a WordPress post, you could edit this to put information about yourself or your site so readers know where you are coming from. You can create as many posts as you like in order to share with your readers what exactly is on your mind.</div>
<div class="one-sixth">This is an example of a WordPress post, you could edit this to put information about yourself or your site so readers know where you are coming from. You can create as many posts as you like in order to share with your readers what exactly is on your mind.</div>