2.4/reference/code-museum/src/com/google/gwt/museum/public/issues/Issue1169.css

@import url("Default.css");

.myMenuBar {
  width: 300px;
}
.myMenuBarPopup {
  border: 1px solid red;
}
.myMenuBarPopup .menuPopupTopLeft,
.myMenuBarPopup .menuPopupTopRight,
.myMenuBarPopup .menuPopupBottomLeft,
.myMenuBarPopup .menuPopupBottomRight {
  display: none;
}