more collision edge cases

Author: adumesny

spec/e2e/html/141_1534_swap.html

@@ -37,11 +37,12 @@ <h1>Swap collision demo</h1>
     let maxButton = document.getElementById('max');
     let bigButton = document.getElementById('big');
     let size = 1;
-    let layout = 0;
+    let layout = 3;
 
     let opt = {
       float: false,
       cellHeight: 70,
+      margin: 5,
       maxRow: 0,
       resizable: {handles: 'sw,w,e,se'}
     };