利用css的 border-image 实现锯齿形

.ele-card{

    height: 130px;

    width: 70%;

    position: absolute;

    z-index: 99;

    top: 26%;

    left: 50%;

    margin-left: -35%;

    background: #fee94e;

}.ele-card-borderImage{

    border-top: 15px solid transparent;

    border-image: url(../img/order_border-min.png) 111 44 round;

    width: 100%;

    position: relative;

    top: -4px;

}