I'm assuming that you're entering that text under
Saturn > Code > Top & Bottom Info. If so, you have complete control over the font size, weight, etc, under
Saturn > Fonts > Index Page > Top info.
To provide spacing, just add some padding to the top and bottom.
Saturn > Code > CSS:
.ja-infotxt {padding: 30px 10px 20px 10px;}
The values are for top, right, bottom, and left, in that order. Don't change the right/left values from their 10px default.