Find the padding-left:15px values in the code and increase 15 to how far to the right you want it. You'll also have to increase the width:340px and the margin-left:-330px values by the same amount.
For example if you increase it by 10px and change the padding-left from 15px to 25px you have to change the width:340px to 350px and the margin-left:-330px to -340px.