If you need to edit or append to the CSS for the Ansys Sphinx theme, create a directory named _static/css next to your conf.py file and then create a custom.css file in this directory.

In this file, place the code for editing or appending to the CSS. CSS styles in the custom.css file override the CSS styles in the Ansys Sphinx theme.

Here is an example that edits the body element:

body {
 font-family: 'Source Sans Pro', sans-serif;
 color: black;
  overflow: auto;
  height: calc(100vh - 3.8rem);
  overflow-y: scroll;
.prev-next-bottom{margin-bottom: 6rem}

Next, in your conf.py file, add the following:

html_static_path = ["_static"]
html_css_files = ["css/custom.css"]