Add first of our making websites section, with a baseline styleguide

making-websites/baseline-styleguide.md

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+# Baseline Styleguide
+
+A styleguide with no style of its own, but nevertheless providing the basic requirements any look-and-feel guidelines must conform to.
+
+```{seealso}
+For writing (rather than presentation), see [Agaric's Content Style Guide](content-style-guide).
+```
+
+## Links
+
+Links should look different than regular text, strong text, or emphasized text. They should have a hover state that communicates they are interactive, and should have a distinct active and visited state. When setting the hover state of links, be sure to include focus state as well, to help readers using assistive technologies and touch devices.