How to multiple class add on contact form 7 submit button

Question

When i add bootstrap button class, like..

[submit class:btn btn-main btn-lg "Send"]

on browser i see it show only one class add.

<input class="wpcf7-form-control wpcf7-submit btn" >

I need others 2 class add also Help Me..

Answer 1

If I remember correctly, you need to add the class attribute to each one.

Try this instead:

[submit class:btn class:btn-main class:btn-lg "Send"]