Switch index section to Jumbotron

Author: logankilpatrick

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@@ -95,10 +95,15 @@ <h2 class="archive__item-title">GeoRegions.jl</h2>
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-<div class="initial-content">
-  <h2>What can a technologist do about Climate Change?<h2>
-  <p>Bret Victor, in 2015, published a <a href="http://worrydream.com/ClimateChange/#tools-technical">famous article</a> about how to contribute to the climate change solution.</p>
-  <br>
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+<!-- https://getbootstrap.com/docs/4.0/components/jumbotron/ -->
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+  <h1 class="display-4">What can a technologist do about Climate Change?</h1>
+  <p class="lead">Bret Victor, in 2015, published a <a href="http://worrydream.com/ClimateChange/#tools-technical">famous article</a> about how to contribute to the climate change solution.</p>
+  <hr class="my-4">
   <p>In that article, he proclaimed that: "Here’s an opinion you might not hear much — I feel that one effective approach to addressing climate change is contributing to the development of Julia."</p>
+  <p class="lead">
+    <a class="btn btn-primary btn-lg" href="http://worrydream.com/ClimateChange/#tools-technical" role="button">Learn more</a>
+  </p>
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