update field upload button color

This is my form.
https://form.jotform.com/210272184611042
I want to change its file upload button like this. I have tried CSS code
but it is not working. Can you please check it.
The sample is in the following link.
https://photos.google.com/share/AF1QipP0rXBbD5Z9Qkjc0YelSUimICqP9-Ns5UeGTs1bbJkqyKOkiXNtDHAulwucAab3Hg/photo/AF1QipN8yWE9v1lGfYwTsXae5ESBZaTYAdOINfO7j8OM?key=WEFDeG5acDlOeldnYkZCWTBGbU1VM1dKLTRFVE1R

You may update your file upload background color using this CSS

.qq-upload-button{

  background: #b54152 !important;

}

Guide:https://www.jotform.com/help/117-how-to-inject-custom-css-codes

Please give it a try and let us know how it goes.