Someone else's code, how can I find the source?

On all pages where there is li or td on line 12 of one or the other, is strange.
Lost the line, and in the editor that such nonsense with links to other sites.

The link to the site https://www.bn53.ru/katalogi/vse_proekty.php
In the screenshot the highlighted li houses KM-2, but it is not visible in the browser, instead...
circled in red in the screenshot.

5e9ba2ae77b29136595867.jpeg
April 19th 20 at 12:47
1 answer
April 19th 20 at 12:49
What you circled is the CSS code (design) the selected item
  • .

    And to see the contents of the coiled element (see the ellipsis ... between
  • and
  • ?), to the left of
  • ...
  • == $0
    is a triangle, aimed at the most
  • click on it with mouse - it will unfold, and the content is displayed...
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