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        <div class="layui-col-xs1" style="padding: 1%">
            <button onclick="searchBooks()" class="layui-btn" lay-submit lay-filter="formDemo">搜索</button>
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<div style="height: 1px" class="layui-col-lg1"></div>
<div class="layui-collapse layui-col-lg10">
    <div class="layui-colla-item">
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