Hello @jkjangir, thanks for getting in touch. If you want the quick download button background to be consistent you can use reusable blocks in the Gutenberg editor. This is the link on how to use create a reusable block with the plugin
If using shortcode you can create 1 one style and copy that style each time you want to create another button.
In case you already have buttons on your site and you don’t want to edit them separately. You can use CSS to change all the background for the button, you will need to add ‘important’ to the attribute.
For example:
button.g-btn.f-l {
background-color: red!important;
}
Add the CSS somewhere in your theme, or in the customiser editor under additional CSS.
I hope this helps.
