Changing font size in a theme

I am using a theme and want to change the font size in one specific view, which I've titled 'school_view'. I've updated the style.css file in the themes/marinelli-5 directory to add the following code at the very bottom of the file, but it doesn't seem to be changing the font size.

.view-school_view {
font-size:0.1em;

}

How do I go about changing the font for this view?

Thank you!