Font Problem with Blog Title on Post Page

Site URL: https://www.munichmotorworks.com/cars-for-sale/1992-toyota-mr2

Hi there: I'm having trouble changing the title font on the actual blog post page. I changed the title in Site Style, but that only seems to affect what's shown on the blog page. I found a couple other posts referencing CSS settings and tried that out, but that was unsuccessful as well.

After reading a bunch more posts I finally found it:

h1.BlogItem-title {
   color: #000000;
  font-size: 50px;
  font-weight: 400;
  font-family: font-name !important;
}