A CSS (Cascading Style Sheet) is web page that defines the layout of fonts, colors, margins, background images, etc. It is used for formatting structured content, and controls how content on your website appears. A CSS can be particularly helpful when styling a form on your website.
See an example of a CSS here.
Your stylesheet is unique to your site and should come from the person that developed your site. It is not something that Enfusen has access to.
- How to find your stylesheet (on WordPress): https://codex.wordpress.org/Finding_Your_CSS_Styles
How to edit your stylesheet (on WordPress): https://wordpress.org/support/topic/how-to-edit-css-style-shee
For more information CSS, click here.