change interaction edges flickering

src/styles/pdb-ligand-env-svg.css

-.pdb-lig-env-svg-shadow-node {
-    stroke-width: 0;
-    fill: white;
-}
 
 .pdb-lig-env-svg-shadow-bond {
-    stroke-width: 15px;
+    stroke-width: 10px;
     stroke: transparent;
 }