How to add a notice on WordPress Dashboard?
function wdes_responsive_tool_1_discounted_add_ons() {
?>
<div class="notice notice-success is-dismissible wdes-responsive-tool-1-discounted-add-ons">
<h3>WDES Responsive Tool 1</h3>
<p>Get a <strong><a href="http://www.WDES Responsive Tool 1.com/purchase/" target="_blank">discount on Pro Version(20%) and Complete Version(30%) !</a></strong></p>
</div>
<?php
}
add_action( 'admin_notices', 'wdes_responsive_tool_1_discounted_add_ons' );