My stylesheets are not enqueuing

Question

I'm in Wordpress 4.5.2 on Windows 10 and I'm trying to register and enqueue my stylesheet in Wordpress, but it just isn't working. I'm having the same problem with jQuery.

I have this code in a plugin, and I am displaying a dashboard widget, which is working just fine:

<?php
    /*
     *   Plugin Name: TEST PLUGIN
    */

    /*  register styles and scripts
    *   register dash widgets
    *
    */

    function register_styles() {

        wp_register_script( 'wildstyle', plugins_url('css/wildstyle.css', __FILE__ ) );

        wp_enqueue_script( 'wildstyle' );
    }

    function register_dash_widget() {

        wp_add_dashboard_widget(
             'test-widget',
             'Test Widget',
             'display_callback'
        );
    }

    /*  add all the actions
    *   
    *
    */

    add_action( 'wp_enqueue_scripts', 'register_styles' );
    add_action( 'wp_dashboard_setup', 'register_dash_widget' );

    /*  display callback for dashboard metabox
    *
    *
    */

    function display_callback() {

        echo '<p>Testing, testing...</p>';
    }

Here is the little bit of css that I'm using for the test:

p {
    color: red;
}

Why is my text not red?

Answer 1

You can add stylesheet in back-office, but you need for that use the admin_enqueue_scripts action.

See Codex reference : https://codex.wordpress.org/Plugin_API/Action_Reference/admin_enqueue_scripts

Answer 2

Just change both lines:

wp_register_script( 'wildstyle', plugins_url('css/wildstyle.css', __FILE__ ) );
wp_enqueue_script( 'wildstyle' );

to

wp_register_style( 'wildstyle', plugins_url('css/wildstyle.css', __FILE__ ) );
wp_enqueue_style( 'wildstyle' );