Update main.css

1-I did change the border color for .blogcolumn1 and made it the same as .blogcolumn2.
2-I gave  .thumbnail  margin-left:2px; and margin-top:2px; so the images won't match with the border.
3-added a       text-align:center; to h3 
4=nav ul { margin-top: 60px;}
5-changes the box-shadow of the #navigation to the same box-shadow in the .blogcolumn1 
6- logo2 
7-logo
These are some changes I made. What do you think guys?