废话不多说，直接上代码：

<div class="address-block" >
   <!-- 其他内容... -->
  <div class="checked-ar"></div>
</div>

.address-block{
    height:120px;
    position: relative;
    overflow: hidden;
    width: 500px;
    border: 1px #ccc solid;
    border-radius: 8px;
    margin: 0 auto;
}
.address-block .checked-ar {
    position: absolute;
    right: 0;
    bottom: 0;
    left: 0;
    content: "";
    height: 0.5rem;
    background: repeating-linear-gradient(-45deg, #FF3B3B, #FF3B3B 14px, #FFECEB 14px, #FFECEB 18px, #2474FF 15px, #2474FF 33px, #FFECEB 31px, #FFECEB 38px);
}