Lets you customize the submit button in Gravity Forms by switching it to a button element and changing its CSS classes
Customize Submit Button for Gravity Forms Download Now
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Originals Link WordPress.org
How to Install Customize Submit Button for Gravity Forms Plugin, Manually
Installing this plugin automatically is the easiest option. You can install the plugin automatically by going to the plugins section in WordPress and clicking Add New. Type “WooCommerce Change Product Author” in the search bar and install the plugin by clicking the Install Now button.
To manually install the plugin you’ll need to download the plugin to your computer and upload it to your server via FTP or another method. The plugin needs to be extracted in the
wp-content/plugins folder. Once done you should be able to activate it as usual.
If you are having trouble, take a look at the Managing Plugins section in the WordPress Codex, it has more information on this topic.
Plugin Not Working?
If any errors or problems with the plug-in then write comments.