Update css to use css variables
something like:
--disclosure-bg-color: #eee;
--disclosure-border-color: #005a9c;
--disclosure-link-color: #000;
--disclosure-link-bg-hover-color: #ddd;
--disclosure-link-style: underline;
--disclosure-button-bg-hover-color: var(--disclosure-border-color);
But maybe following a nicer naming convention.
Also, not sure if we need to define focus styles here.
Edited by Maria