Gravity Forms already lets you customize Submit Button under its Form Settings for each form you can change the text and you can select whether the button should be or element.
However, you can't add html as part of the text and you're restricted to using either input or element for the button.
After activating the plugin, please navigate to the form settings of the form that you wish to customize.
In the same 'form button section under form settings, there's input called ' Submit Button CSS Classes This is where you can change CSS classes being used by the submit button..
Where to select the input type, HTML in the text and make changes to CSS classes...
You can install the plugin automatically by going to the plugins section WordPress and clicking Add New.
WooCommerce Change Product Author in the bar and install the plugin by clicking Install Now button..
To install the plugin you'll need to download the plugin to your computer and upload it to your server via FTP or another method.
If you are having trouble, take look at Managing Plugins section in WordPress Codex, it has more information on this topic...
Browse the code, check out SVN repository, or subscribe to the development log by RSS...
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