No it's not, only learning HTML and CSS don't give you money but skills.
If you will try to use them in correct place then only you will be able to earn money.
[Edit]: If you think you are good in these langs then read these:
Well In that case it means u should learn js as well .
Bcuz the essentials for any web developer (front end especially) is learning html , css and js .
So after u learnt them and worked on making web codes , u can apply for job interviews and if ur good and pro in no matter of time you'll become successful 😉🙂
Why are you not thankful?
Dave Carlson is a little different to most bitcoin millionaires as he made his amazing $350 million fortune from actually mining bitcoins himself. Hailing from North America, where he runs his mining operation in the Washington area, he got into bitcoin early in 2010.