display content in multiple columns

found a simple solution ..I m posting full index.php

<?php
/**
 * Description: Default Index template to display loop of blog posts
 *
 * @package WordPress
 * @subpackage BootstrapWP
 */
get_header(); ?>

<?php

// Some sample styles for the images
echo "<style type="text/css">

    .half {
    width: 50%;
    float: left;
}

.ng-row {
    clear: both;
}

</style>\n";

?>

<div class="container">
    <div class="row">
        <div class="span6">
                <div class="span4">


<?php if (have_posts()) : while (have_posts()) : the_post(); ?>
<div class="half">
<?php the_excerpt()?>

</div>
<?php endwhile;endif ?>

    <?php get_sidebar('blog'); ?>
    <?php get_footer(); ?>

---

2. Another Clean and much more accurate solution without even/odd i found and modified is

   <?php if (have_posts()) : 
   
       while(have_posts()) :
       $i++; 
   
        the_post()?>
   
   
    <div class="row" style="width: 670px;">
    <div id="left-column">
   
    <?php the_content(); ?>
    </div>
   
   <?php 
   endwhile;
   ?>
   

   <style>
   
    left-column {
   width: 333px;
   float: right;
   clear: none;
   }
   
   </style>
   

Hope this is helpful