User:Assume a=a/monobook.css

.usermessage {

background-color: lightgreen; border-color: #B5F; color: black; font-weight: bold; margin: 2em 0em 1em 0em; padding: 0.5em 1em; vertical-align: middle; -moz-border-radius-topleft: 1em; -moz-border-radius-bottomleft: 1em; -moz-border-radius-topright: 1em; -moz-border-radius-bottomright: 1em; text-align: center;

}