.use-recommend picture img {
        display: block;
       max-width: 690px;
       margin: 0 auto;
    }
    .ex-title {
       padding-bottom: 40px;
    }
    .use-recommend{
       text-align: center;
    }
    .use-recommend hr{
        max-width: 690px;
        background: #2D292680;
    }
    .use-recommend .group-note .note{
        max-width: 690px;
        margin: 0 auto;
        text-align: left;
    }
    .use-recommend .group-note .note{
        font-size: 10px;
    }

 @media (max-width: 960px) {
    .use-recommend picture img {
       width: 100%;
       padding:20px;
    }
    .use-recommend hr{
        width: 90%;
    }
    .use-recommend .group-note{
        padding:20px;
    }
}