2.4/samples/mobilewebapp/src/main/java/com/google/gwt/sample/mobilewebapp/client/mobile/MobileCellList.css

.cellListEvenItem,.cellListOddItem {
  border-bottom: 1px solid #bbb;
  padding: 22px 10px;
  font-size: 14pt;
  color: #333;
}