slide text tag size and line height

Hello guys,

I want to reduce the text size of the top left slider from the linekd page.It is set to H2 on default and I cant figure a way to change it. The text size is too big for it and it looks stupid. I tried with the CSS below, but it only reduces the text size, unfortunately the spacing between the lines and words stays like in H2, which doesnt look appropriate either. Please help!

.fusion-flexslider.flexslider-posts .slide-excerpt h2 a {
    color: #fff;
    font-size: 20px !important;
  letter-spacing: 1px !important;
  line-height: 2px !important;
  margin: 5px !important;
}

The page I need help with: [log in to see the link]