Question

Does anybody know a way to specify a width for the CSS style id, #wpcontent, in the admin area without modifying the core files? I’d like to expand the width for my plugin setting page. I just need to change #wpcontent{height:100%} to #wpcontent { height:100%; width: 100%; }.

According to this page, it seems another CSS file needs to be embedded. But if you can show an easy way, it would be appreciated.

Answer 1

No need to import external files.

$width = 'width: 100%;';
echo '<style type="text/css">
    #wpcontent {
        height:100%;
        ' . $width . '
    }
    #footer {
        ' . $width . '
        color: #777;
        border-color: #DFDFDF;
    }           
</style>';

Also, instead of stripos(), I would use $_GET,

if ($_GET['page'] == PLUGINPAGESLUG)