I am studying the css classes Tiddlywiki use to format its elements. I made a little mindmap but I think I forgot many important classes.
hi, fixed link:open https://tiddlywiki.com/#%24%3A%2Fthemes%2Ftiddlywiki%2Fvanilla%2Fbase in edit mode and you'll find a lot of them, which are used for styling at the moment.
/* Comment */
img {max-width:100px; }
h1,h2 {top-border:1px solid gray; } /* Put border above H1 and H2 elements for better visual separation /*
.tc-titlebar {border-top:2px solid black;}
.tc-tiddler-controls {border-top:2px solid red;}
.tc-titlebar h2 { font-size: 14pt; display: inline; font-weight: bold; }
.tc-tiddler-body h1 {margin-bottom: 3pt; border-top: 1px solid lightgray;}
.tc-tiddler-body h2 {margin-bottom: 3pt;}
.tc-tiddler-body ul, ol {margin-top: 3pt;}
.tc-tiddler-frame { padding-top: 2px; padding-bottom: 2px; padding-right: 1em padding-left: 3pt; }
.tc-story-river {padding-right: 1pt; padding-left:3pt; }
.tc-sidebar-scrollable {padding-left: 1pt; }
/* Below is for date in "Recent" list on sidebar */
.tc-menu-list-item { color: #404040; }