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              <p>Clean static treemap</p>
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              <p class="explanation_portfolio">A clean layout for this static treemap by Mike Bostock. Always good to read d3.js creator's code.</p>
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          <img class="img-fluid showBlock" src="img/block/block_treemapMike.png" alt="Treemap mike d3">
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      <div class="col-md-4 col-sm-6 portfolio-item">
        <a class="portfolio-link" href="http