Wordpress automatically generate lot of unwanted  tags every where. Even the img tag also wrap by these  t         
        
Go into the theme editing area of WP admin.
Add this code to your functions.php file, and save it.
<?php
function my_formatter($content) {
    $new_content = '';
    $pattern_full = '{(\[raw\].*?\[/raw\])}is';
    $pattern_contents = '{\[raw\](.*?)\[/raw\]}is';
    $pieces = preg_split($pattern_full, $content, -1, PREG_SPLIT_DELIM_CAPTURE);
    foreach ($pieces as $piece) {
        if (preg_match($pattern_contents, $piece, $matches)) {
            $new_content .= $matches[1];
        } else {
            $new_content .= wptexturize(wpautop($piece));
        }
    }
    return $new_content;
}
remove_filter('the_content', 'wpautop');
remove_filter('the_content', 'wptexturize');
add_filter('the_content', 'my_formatter', 99);
?>
Now, when writing a post/page, use [raw][/raw] tags to surround that parts of the post/page that you do not want formatted.
OR
 <?php the_content(); ?>
and place this directly above:
<?php remove_filter ('the_content', 'wpautop'); ?>
it should look like this:
<?php remove_filter ('the_content', 'wpautop'); ?>
<?php the_content(); ?>