/*!
 *  start off with an important comment that we want to keep.
 *  the next statement should start on a new line if this is expanded mode.
 */
body
{
    background: #fff
}
/*!
 *  another important comment -- this should always start on a new line,
 *  but the next statement should not if this is single-line mode
 */
a:hover
{
    color: red
}
a:active
{
    /*! this is an important comment */
    color: blue
}