.gui-calendar-select {
  background: rgba(0, 0, 0, 0.05);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 16px;
}
.gui-calendar-select .gui-calendar-prev-btn,
.gui-calendar-select .gui-calendar-next-btn {
  width: 40px;
  height: 40px;
  background-size: 25px 25px;
  background-position: center;
  background-repeat: no-repeat;
  opacity: 0.8;
}
.gui-calendar-select .gui-calendar-prev-btn:active,
.gui-calendar-select .gui-calendar-next-btn:active {
  background-color: #ddd;
  opacity: 1;
}
.gui-calendar-select .gui-calendar-prev-btn {
  background-image: url(https://img.alicdn.com/tfs/TB1kdn3rbvpK1RjSZFqXXcXUVXa-64-64.png);
}
.gui-calendar-select .gui-calendar-next-btn {
  background-image: url(https://img.alicdn.com/tfs/TB1kDj3rhTpK1RjSZFMXXbG_VXa-64-64.png);
}