HI Kelly,
You can add this following css to manage line spacing on your information boxes;
.info-box-grey {
line-height:25px;
}
Note: You can manage line height property as per your requirement. @see here for reference http://www.w3schools.com/cssref/pr_dim_line-height.asp
And we refer you to use child theme style.css file to add this custom css ,so your changes will not lost on theme update.
Let us know if you got any problems on this.
Thanks