css爲元素添加多張背景圖片

.select_language{   
    width: 121px;
    max-width: 100%;
    background:url("../images/select_black_icon.png") no-repeat calc(100% - 10px) center,
              url("../images/select_language_icon.png") no-repeat 10px center;
              background-color: #fff;
}

預覽效果：