silverstripe-cms/css/TinyMCEImageEnhancement.css

.contentPanel .group {
    display: inline;
    margin-left: 2px;
}
.contentPanel .middleColumn {
    margin-bottom: 2px;	
}
.contentPanel .link {
    text-decoration: none;
    margin-left: 2px;
} 


.contentPanel .tree_holder {
    display: inline;
}
.contentPanel #NewFolderName {
    width: 120px;
    margin-top: 0;	
}