Pasting the response from another platform here:
You can use CSS to style the uploader and its elements. First, use developer tools to inspect the element you want to modify and identify its selector. Then, add a custom style for that selector in your site’s CSS. For example, to make the main button match your design, you can add something like this:
uc-simple-btn button {
padding: 1.25em;
width: 250px;
background-color: #cb6f00;
color: #ffffff;
font-weight: 600;
}
You can learn more about styling the uploader from our docs: File Uploader styling | Uploadcare docs.