客服回复中的表情包

这里调用的是否可以自主改成外部链接方式，另外除现有在使用的tlj.png，其他的是否也可以直接解除注释直接添加上是否会报错，如下：

.em {
    display: inline-block;
    height: 1em;
    width: 1em;
    overflow: hidden;
    line-height: 18px;
    font-size: 22px;
    vertical-align: middle;
    /* margin-top: -4px; */
    color: transparent !important;
    background-image: url(@/static/emoji/img/sheet_apple_64_indexed_256colors.png);
    background-image: url(@/static/emoji/img/sheet_emojione_64_indexed_128.png);
    background-image: url(@/static/emoji/img/sheet_facebook_64_indexed_128.png);
    background-image: url(@/static/emoji/img/sheet_google_64_indexed_128.png);
    background-image: url(@/static/emoji/img/sheet_messenger_64_indexed_128.png);
    background-image: url(@/static/emoji/img/sheet_twitter_64_indexed_128.png);
	background-image: url(@/static/emoji/img/tlj.png);
	background-size: 4100%;
}

或者设置成外部链接（列示）

.em {
    display: inline-block;
    height: 1em;
    width: 1em;
    overflow: hidden;
    line-height: 18px;
    font-size: 22px;
    vertical-align: middle;
    /* margin-top: -4px; */
    color: transparent !important;
    background-image: url(https://www.crmeb.com/static/emoji/img/sheet_apple_64_indexed_256colors.png);
    background-image: url(https://www.crmeb.com/static/emoji/img/sheet_emojione_64_indexed_128.png);
    background-image: url(https://www.crmeb.com/static/emoji/img/sheet_facebook_64_indexed_128.png);
    background-image: url(https://www.crmeb.com/static/emoji/img/sheet_google_64_indexed_128.png);
    background-image: url(https://www.crmeb.com/static/emoji/img/sheet_messenger_64_indexed_128.png);
    background-image: url(https://www.crmeb.com/static/emoji/img/sheet_twitter_64_indexed_128.png);
	background-image: url(https://www.crmeb.com/static/emoji/img/tlj.png);
	background-size: 4100%;
}