Welcome to the TiddlyVerse!
The TiddlyWiki Classic default styles are stored in "shadow" tiddlers.
If you at the "shadow" tiddler, [[StyleSheetColors]], you will see the following:
h1,h2,h3,h4,h5,h6 {color:[[ColorPalette::SecondaryDark]]; background:transparent;}
h1 {border-bottom:2px solid [[ColorPalette::TertiaryLight]];}
h2,h3 {border-bottom:1px solid [[ColorPalette::TertiaryLight]];}
To override these defaults, copy these rules into your custom StyleSheet tiddler, and then modify them to suit your tastes.
Note: you should *not* edit the shadow stylesheet tiddler directly. All CSS customizations should be placed in the user defined [[StyleSheet]] tiddler, which is always applied after the defaults.
enjoy,
-e
Eric Shulman
TiddlyTools / ELS Design Studios
"Inside TiddlyWiki: The Missing Manual"
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