Changing font size of text from text widget on the front page

Hi there,

I am trying to change the font size of the text of a text widget on the front page.
On the custom CSS, I put font-size: 50px; & also tried 1.25em & also tried medium, etc. but there are no changes.
It’s strange because I was able to apply other styles to the text (like font family, position, etc.). How do I override the
pre-set font size for text in text widget boxes? ( i am using Weta)