Hi whatwhat. Welcome to the forums.
There are lots of ways to do that, but here's one simple option. Firstly, increase these two values in red (which you'll find around line 408 in base.css):
padding: <font color='"#FF0000"'>20</font>px 0 <font color='"#FF0000"'>15</font>px 0;
These values set the padding on top and bottom of the "Services" title respectively, so as you increase them, the spacing above and bloow the title will increase.
To remove the horizontal line, go to line 199 (or thereabouts) in the same base.css file and remove this line in red:
<font color='"#FF0000"'>border-bottom: 1px solid;</font>
Hope that helps.