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You don't show enough of the document structure in the question to provide a fully fleshed-out example, but since it appears that you're now able to block based on CSS selectors and simply need help figuring out what CSS selector you should use...

CSS supports both attribute substring matching and positional pseudo-classes, which can help you out here. For example, if I'm not mistaken, you could use a CSS selector along the lines of

    div[aria-label="Servers"]:nth-child(4) div[class^="listItem"] div div svg { }

which would find a `div` with an `aria-label` attribute value of `Servers`, locate the fourth child element of that, then go three `div` elements deep (the first of which must have a `class` attribute with a value that begins with `listItem`), then apply the specified style to the `svg` element therein.

You blacked out the value for `class` for the `div` `listItem` class names; it's possible that those could provide something more reasonable to match on, in which case you might instead try something like

    div[aria-label="Servers"] div.listItem-12345 div div svg { }

It's also possible that the `data-dnd-name` property might be useful for matching, in which case you can try as a starting point

    div[aria-label="Servers"] div div div[data-dnd-name="..."] svg { }

or to match something at the beginning of the property value, again

    div[aria-label="Servers"] div div div[data-dnd-name^="some-"] svg { }

Complex CSS selectors can be a bit tricky to get right, and something like the above will likely be very heavily dependent on the exact document structure, but they are also extremely powerful when you need to match something that you can't readily match directly (such as something that doesn't have an appropriate `id` or `class` attribute to match on). [Here's a fairly readable overview](https://learn.shayhowe.com/advanced-html-css/complex-selectors/) of some of the more complex CSS selector mechanisms available; the *Attribute Selectors* (currently about a third of the way down from the top of the page) and *Structural & Position Pseudo-classes* (about half way down) sections are likely to be particularly useful in your scenario.