Hello @jojoma1,
Thanks for your inquiry.
Yes, you’ll just need to add a small CSS code. Please enter Appearance > Customize > Additional CSS section and add the below code there:
.fm-form-container .fm-form .button-submit {
background: url(https://www.freepngimg.com/thumb/submit_button/25387-5-submit-button-clipart-thumb.png)
https://www.freepngimg.com/thumb/submit_button/25387-5-submit-button-clipart-thumb.png
);
background-size: 100%;
background-position: 0;
background-repeat: no-repeat;
color: transparent;
}
Here instead of https://www.freepngimg.com/thumb/submit_button/25387-5-submit-button-clipart-thumb.png should be your desired image URL.
You can also change background size and position values for better results.