Solved! Thank you so much for your help! 🙂

Thank you for the info. I’ve checked the topic but it’s not working on my site. I’ve tried to get the underline by default for all the links inside the posts with this code and it doesn’t make any changes:

.tdb_single_content a {
border-bottom: 1px solid #ed1d25;
}
.tdb_single_content a:hover {
color: ##00a7c9;
}

Also I’ve tried this piece of CSS code recommended in the topic and still can’t get the underlined links:

.wpb_text_column a, .wpb_text_column a:hover, .td_block_text_with_title a, .td_block_text_with_title a:hover{
text-decoration: underline red!important;
}

Can you help me, please? Here’s a post of my website if you want to check: https://misterkernel.com/google-and-universal-music-want-artists-to-get-paid-for-ai-generated-music

Thank you in advance!

From the screenshot I see that’s a feature only available in Newspaper v11. I’m working with the previous version and I don’t see that option, so I’ll have to update the theme. Thanks for your answer!!!