.list-group {
  padding-left: 0;
  margin-bottom: 20px;
}
.list-group-item {
  position: relative;
  display: block;
  padding: 10px 15px;
  margin-bottom: -1px;
  background-color: #fff;
  border: 1px solid #ddd;
}
.list-group-item:first-child {
  border-top-left-radius: 4px;
  border-top-right-radius: 4px;
}
.list-group-item:last-child {
  margin-bottom: 0;
  border-bottom-right-radius: 4px;
  border-bottom-left-radius: 4px;
}
a.list-group-item,
button.list-group-item {
  color: #555;
}

.plus {
    width: 10px;
    height: 10px;
    content:url("image/plus.gif");
}

.minus {
    width: 10px;
    height: 10px;
    content: url("image/minus.gif");
}