Hello, welcome to therichpost.com. In this post, I will tell you How to add css to wordpress admin head with wordpress add action hook? WordPress is the best cms. WordPress hooks(add_action, add_filter) give us the power to edit or change the code without interruption into the files and this is the best thing about wordpress. Now I am going to tell you how the hooks work.

And Now Final, here is the wordpress hook to add add css to wordpress admin head and you need to add this hook into your wordpress theme’s functions.php file:

add_action(‘admin_head’, ‘my_custom_css’);
function my_custom_css()
{
echo ‘<style>ul.order_notes li.customer-note .note_content{background:#76E378}#acf-field-tracking_number{margin-right:10px}.order_notes img{max-width:200px}</style>’;
}

There are so many hooks in wordpress and i will let you know all. Please do comment if you any query related to this post. Thank you. Therichpost.com