.tab-tools {
        bottom: 80px;
        display: none;
        font-size: 14px;
        position: fixed;
        right: 6.77%;
        z-index: 100;
    }
    .tab-tools .tab-refresh, .tab-tools .tab-back {
        background-color: #fff;
        background-image: url("http://m.baidu.com/static/index/plus/public/tab_news.png");
        background-size: 98px 41px;
        border: 1px solid rgba(0, 0, 0, 0.1);
        border-radius: 22px;
        height: 42px;
        opacity: 0.8;
        width: 42px;
    }
    .tab-tools .tab-refresh {
        background-position: -15px 0;
        margin-bottom: 4px;
    }
    .tab-tools .tab-refresh.rotate {
    }
    .tab-tools .tab-back {
        background-color: #fff;
        background-position: -57px 0;
    }
    .tab-tools .tab-refresh.click-tools, .tab-tools .tab-back.click-tools {
        background-color: #ccc;
        border: 1px solid rgba(0, 0, 0, 0.1);
    }
    .tab-tools.show-tools {
        display: inline-block;
    }
    .tab-tools.hide-tools {
        display: none
    }