<div*ngFor="let it of item.picArr; let i = index"style="padding: 10px; border: 1px solid #ccc; border-radius: 10px; width: 520px; margin-bottom: 20px">
<div*ngFor="let it of item.picArr; let i = index"style="padding: 10px; border: 1px solid #ccc; border-radius: 10px; width: 520px; margin-bottom: 20px">