Is it possible to make such a glass effect through CSS?

I have this part of the code:
<div class='osnova'> <a href='..'>в траве сидел кузнечик..</a></div> If I increase transparency in a div, then the text also becomes transparent, even though in <a> I still thrust
opacity 1.0 Tell me, how can you avoid the text becoming transparent with the background?