If you go back into the CSSMenuWriter interface, you could make adjustments to the 2nd level left margin of about 75px (from 0px). You could change it directly in your menu.css stylesheet, but the change would be lost if you re-enter the menu interface.
If you do want to just change it in the menu.css,you could add a margin-left of 75px to your level-2 rule:
ul#cssmw_home ul.level-2 > li > a {
background-color: #fff;
background-image: none;
border-bottom: solid 1px #AEBBC2;
border-left: solid 1px #AEBBC2;
border-right: solid 1px #AEBBC2;
color: #272B4B;
display: block;
font-family: Arial, Helvetica, sans-serif;
font-size: 10px;
font-style: normal;
font-weight: bold;
margin: 0 0 0 75px; /* Changed from 0 0 0 0; */
padding: 5px 5px 5px 5px;
text-align: left;
text-decoration: none;
text-transform: none;
width: 175px;
}