#welcome-f
{
  border: 0px solid #000;
  cursor: pointer;
  overflow: hidden;
  width: 580px;
  height: 280px;
  margin-left: 18px;
  margin-bottom: 12px;
  float: right;
}

#welcome-f img
{
  border: 0;
  cursor: pointer;
  width: 580px;
  height: 280px;
}