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/*箭頭向下圖案*/
.show.pif-arrow-down::after{
content:url(圖片網址);
position:absolute;
top:-50px;
right:50px;
}


/*箭頭向上圖案*/
.show.pif-arrow-up::after{
content:url(圖片網址);
position:absolute;
top:-50px;
right:50px;
}