How to enable Visualforce page scroller for all browsers?

Hi,

I have a Visualforce page in my Salesforce.com application, we have scroller in page working fine with the Salesorce1 app and other browsers, but scroller not working in ios browser.

Please guide me with proper instruction to make scroller enable for all browsers.

`
.techOverScroll,.bDiv,.mergeMapSO{
min-height:auto;
max-height:250px;
overflow: auto;
// overflow-y: auto;
//overflow:hidden;
overflow-x:hidden;
-webkit-overflow-scrolling:touch;
//overflow-y:scroll;
width:100%;
}
`