MediaWiki:Monobook.css

a {
    text-decoration: none;
    color: #002bb8;
    background: none;
}
a:link {
   text-decoration: none;
    }
a:visited {
    color: #5a3696;
   text-decoration: none;
}
a:active {
    color: #faa700;
}
a:hover {
    text-decoration: underline;
}

#p-cactions ul li,
#p-cactions ul li a     { -moz-border-radius-topleft: 1em; -moz-border-radius-topright: 1em; }
#column-content, #content { -moz-border-radius-topleft: 1em; -moz-border-radius-bottomleft: 1em; }