For 1, it looks like we... don't actually have any tagging around the cut text link? Which we should maybe fix at some point, but in the meantime, using "span.cuttag + b a" with an !important seems to maybe work ('+' is the sibling selector, so it's 'select a bold element that is next to the span element with the class 'cuttag' and then target the link inside it')
For 2, that's not the right bit of code - that's for the 'expand all/collapse all' sidebar module. I'll do some digging, but I'm not sure it's produced in S2 at all, and may already be baked in to the entry text when it gets there. If so, it looks like you can maybe use the sibling selector trick again, set the font size of the b element to 0px, and then set the font size of the a element inside it back to 1rem or whatever.
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For 2, that's not the right bit of code - that's for the 'expand all/collapse all' sidebar module. I'll do some digging, but I'm not sure it's produced in S2 at all, and may already be baked in to the entry text when it gets there. If so, it looks like you can maybe use the sibling selector trick again, set the font size of the b element to 0px, and then set the font size of the a element inside it back to 1rem or whatever.