Reduce width allowed for Table of Contents left side (links)

[S. S.]

On the tiddlywiki.com website, if I make a tabbed internal Table of Contents as follows:

<$macrocall
    $name="toc-tabbed-internal-nav"
    tag="Learning"
    selectedTiddler="$:/temp/toc/selectedTiddler"
    unselectedText="<p>Select a topic in the table of contents. Click the arrow to expand a topic.</p>"
    missingText="<p>Missing tiddler.</p>"
/>

Some long  titles cause the left side to take up half the width of the tiddler, leaving too little space to display tiddler contents on the right side.

I want to change (reduce) the width allowed on the left-side index of links.

I found the place in the CSS tiddler $:/themes/tiddlywiki/vanilla/base that allows the width to be changed:

.tc-tabbed-table-of-contents .tc-table-of-contents {
        z-index: 100;
        display: inline-block;
        padding-left: 1em;
        max-width: 50%;
        -webkit-flex: 0 0 auto;
        flex: 0 0 auto;
        background: <<colour tab-background>>;
        border-left: 1px solid <<colour tab-border>>;
        border-top: 1px solid <<colour tab-border>>;
        border-bottom: 1px solid <<colour tab-border>>;
}

I want to change the value max-width: 50%; by perhaps using a field value in a ToC tiddler, like width with a value of: 30%
or using a class field

I do not want to modify the $:/themes/tiddlywiki/vanilla/base tiddler , nor the ToC Macros in $:/core/macros/toc

How might I accomplish this?

Wishing all a dynamic, productive, rewarding year ahead!

[Mark S.]

Tag your tiddler "Test". Create a stylesheet tiddler (a tiddler tagged $:/tags/Stylesheet):

[data-tags~="Test"] .tc-tabbed-table-of-contents .tc-table-of-contents {
max-width: 30% ;
}

That should change the max-width. I think you can see how to change "Test" to some other tag name, if you prefer.

Good luck

-- Mark

[S. S.]

Mark,

I must have been in a parallel universe for some hours. I thought I tried that - and it didn't work over there!
It works now 😉

Thank you for bringing me back to this world.

Regards