Recent Posts Widget Help

Hello,

I am using twenty eleven to make my website . stillon localhost and it is not published si i cannot give the link to my website .

i am using recent posts widget to display news on the right side of the main (1st) page .

my issues are :-
1. when the title of the news is big it takes 2 rows and there is a big space in between ,i do i reduce that .

2.the title of all news in the right are all bold , how do i make them not bold .

3. i want to make space between 2 news .

4. how do i reduce the font size of the news titles .

Please help .