fix: fix wrong click position

The spurious `<br>` inside the cytoscape div shifted the mouse click radius down

Author: mstimberg

index.html

@@ -65,7 +65,7 @@ <h5 class="offcanvas-title" id="filter_pane_label">Highlight simulators</h5>
         <div class="container-fluid" style="height: 80vh; width: 100vw;">
             <div class="row" >
                 <!-- graph -->
-                <div class="col col-8" style="height: 80vh" id="cy"><br /></div>
+                <div class="col col-8" style="height: 80vh" id="cy"></div>
 
                 <!-- details pane -->
                 <div class="col col-4 d-flex flex-column justify-content-between" style="height: 80vh; overflow: scroll" id="details">