bootstrap 圖案美化

立體按鈕

.glyphicon-plus {

        box-shadow: 0 1px 2px 0 rgba(60,64,67,0.302), 0 1px 3px 1px rgba(60,64,67,0.149);

        border-radius:28px;

        padding:5px 4px 5px 5px;background-color:white;

}