边框波浪线

  <!-- 优惠券 -->
  <view class="select_price" bindtap="getCoupon" style="border-top:1rpx solid #f5f5f5;">
    <view class="s_title">
      <view>领券</view>
      <!-- 实现波浪线的div -->
      <view class="wave-container">
        <view class="wave">满200减122010</view>
        <view class="wave-left-decorate"></view>
        <view class="wave-right-decorate"></view>
      </view>
    </view>
    <image class="s_img" src=‘https://tws.cnweisou.com/images/rightArrow.png‘></image>
  </view>
  <!-- 优惠券 -->

.wave-container {
  display: inline-block;
  position: relative;
  box-sizing: border-box;
  margin:0 28px 0 10rpx;
}

.wave {
  font-size: 20rpx;
  color: #fff;
  width: 100%;
  height: 40rpx;
  background: #e50b0b;
  padding: 5rpx 15rpx;
  box-sizing: border-box;
}

/* 波浪线 */

.wave-left-decorate{
    position: absolute;
    top: 28rpx;
    width: 30rpx;
    height: 16rpx;
    transform-origin: center left;
    transform: rotate(270deg);
    background: radial-gradient(circle, #fff 2px, #fff, transparent 3px, transparent 4px, transparent 4px, transparent);
    background-size: 8px 8px;
}

.wave-right-decorate{
    position: absolute;
    top: 30rpx;
    right: 0;
    width: 30rpx;
    height: 16rpx;
    transform-origin: center right;
    transform: rotate(90deg);
    background: radial-gradient(circle, #fff 2px, #fff, transparent 3px, transparent 4px, transparent 4px, transparent);
    background-size: 8px 8px;
}