单行隐藏

1. overflow: hidden;
2. text-overflow: ellipsis;
3. white-space: nowrap;

多行隐藏

        overflow: hidden;
        text-overflow: ellipsis;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        line-height: 40rpx;
        height: 80rpx;/* 2行隐藏就两倍，三行隐藏就三倍*/
        word-break: break-all;