Nicolas Lempereur
cb047ae69d
Since e94702d8 when transcoding an element for the purpose of sending it
by mail, if the element had:
border-bottom-style: solid;
in the CSS resulting from classes, it would be simplified to:
border-style: 0 0 solid 0;
which is wrong since 0 is invalid for border-style, the default being:
none
opw-1852839
closes #25423