.btn_plus,
.btn_minus {
  background: url(btns.png) 0 0 no-repeat;
  background-size: 88px 44px;
  width: 44px;
  height: 44px; }

.btn_minus {
  background-position: -44px 0; }

.score {
    color: white;
    font-weight: bold;
    position: absolute;
    right: 18%;
    padding: 6px;
    z-index: 9999;
}