css fix with a new div element as container

- div with bulma section class

Author: kalwalt

tools/FeatureSet-Display/index.html

@@ -4,13 +4,14 @@
 subtitle: Display your .iset .fset .fset3 files
 content_width: is-full
 ---
-<div class="container" id="cv">
+<div class="container">
   <h1>FeatureSET-Display</h1>
   <p>Displaying .iset .fset .fset3 files</p>
   <p>Feature points: light green circles</p>
   <p>FeatureSet3 points: tiny red circles</p>
   <input type="file" id="markerLoader" name="markerLoader" style="display: none;" multiple />
   <button class="button" id="uploadBt" title="select all 3 files: .iset .fset and .fset3" onclick="document.getElementById('markerLoader').click();">Upload NFT marker</button>
+  <div class="section" id="cv"></div>
 </div>
 
 <script type="text/javascript" src="./dist/ARFset.js"></script>