Events+ CSS

http://awesomeadventurewomen.com/upcoming-events/
The above page uses the upcoming events short code, however the events need separation between them. How do I add more spacing between the listed events and put the line in between the events?

http://awesomeadventurewomen.com
The homepage linked above uses the upcoming events widget but again the events need spacing between them and a title to be bigger. How do I achieve this?

http://awesomeadventurewomen.com/register/
The register page above uses grey font color by default. How do I make it Black?

Please just mention which file I need to edit and what code snippets I need to include.

Thanks in advance for your help.