CSS Column Layout
When working on websites, one of the most common patterns is column-layout. You want have some main content flow in the center of the page, and have one or two...
Typical browser caches all CSS and JS files to avoid unneeded download. In WordPress, this has a big effect on your changes to style.css file. These changes will not be immediately visible to old visitors.
Add the following code to your functions.php. It appends version number to the URL (in query string). Changing the version number forces a browser to re-download style.css.
function my_wp_default_styles_scripts($styles) {
$my_theme = wp_get_theme();
$styles->default_version = $my_theme->get( 'Version' );
}
add_action("wp_default_styles", "my_wp_default_styles_scripts");
add_action("wp_default_scripts", "my_wp_default_styles_scripts");
It’s a simple fix, but it’s not well documented in WordPress.