select样式设计

举例：

 select {
            color: blue;
            /*去掉边框*/
            border: none;
            outline: none;
            /*去掉箭头*/
            -webkit-appearance: none;
            /*右对齐*/
            direction: rtl;
            /*左对齐*/
            /*direction: ltr;*/
        }
        select option {
            direction: rtl;
        }