Page element names list within CSS for custom CSS in career site

Summary: This is regarding custom CSS code which we can put while creating career site. From where we can get list of element names within CSS code.

For Example .search-box-compact**button {

 background-color: var(--color-theme-1) !important;

 border-radius: 5px !important;

 overflow: hidden;

Content (required):

We need list of element names for custom CSS code so that client can use these code and replace with their color codes,theme,radius information etc

Version (include the version you are using, if applicable):

Code Snippet (add any code snippets that support your topic, if applicable):