.yClass{
  background-color : yellow;border-width : 1px 1px 1px 1px;border-color : yellow yellow yellow yellow;border-style : solid solid solid solid;}
.bClass{
  background-image : url(g_b_wall1.jpg);border-width : 1px 1px 1px 1px;border-style : solid solid solid solid;border-color : yellow yellow yellow yellow;}