Underline vanished, it’s just the font-weight that doesn’t seem to work. I used: font-weight:100 !important;
Here it is https://tinyurl.com/2p9c6bv4
Obviously I can’t clear cache every 15 minutes on shared hosting. It’s easier to search something.
I just realized that this is the best can be done. font-weight it’s already the thinnest, and 100 doesn’t change anything.
I must delay a little upgrade for Plus Plugin, but will do later this year.
Thank you so much!