To increase the spacing between bullet points with CSS simple add the below code to your .css file:
ul li { margin:.5em 10% .5em 0; }
Obviously you can change the values to reach your desired spacing, but the above works well and looks neat and tidy.
An example using this method would look like this:
- Bullet Point 1
- Bullet Point 2
- Bullet Point 3
- Bullet Point 4