  <button class="btn btn-dim btn-outline-primary btn-block card-link mb-3" @click="query">
                查看证书信息
            </button>
        </div>
    </div>
    <div class="card card-preview" v-show="showresult" style="display:none">
        <div class="card-inner mt-3">
            <div class="nya-title nk-ibx-action-item progress-rating">
                <span class="nk-menu-text font-weight-bold">查询结果</span>
            </div>
            <h6>主题信息</h6>
        