Links, especially when they are placed within a longer text, can easily be overseen. That is why we need to make them stand out. The underlining of the text might not be the most beautiful way of doing this, but it's the clearest one.
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Style links as underlined text. Bonus: In CSS use a border-bottom instead of text-decoration, it renders sharper and usually looks cleaner.
Written by Jonas Kamber, Digital Product Nerd and UX Enthusiast since 1998. LinkedIn