Update index.html

Author: VD171

index.html

@@ -115,7 +115,7 @@
         const colgroup = document.createElement("colgroup");
         colRefs = columns.map((_, i) => {
           const col = document.createElement("col");
-          col.style.width = "100px";
+          col.style.width = "300px";
           colgroup.appendChild(col);
           return col
         });