[WorldCraft]

You must have made a mistake somewhere, the display:inline-block; did not get accepted.

It should look like this:

/*This will remove the cutoff*/
#membersblock ul.blockrow li
{
width: auto;
text-align: center;
}

/*This will allow the thumbs to center*/
.memberlist a.avatar
{
float: none;
display: inline-block;
}