.list-group-item {
  position: relative;
  display: block;
  padding: 10px 15px;
  margin-bottom: -1px;
  background-color: #ffffff;
  border: none;
}

.cf {
  background-color: #d1d1d1;
  border-width: 2px;
  border-style: solid;
  border-color: #808080;
}