IOS上iframe的滚动条失效的解决办法

#iframe-wrap {
position: fixed;
top: 100px;
bottom: 0px;
left: 0px;
right: 0px;
-webkit-overflow-scrolling: touch;
overflow-y: scroll;
}

#iframe-wrap iframe {
border: none;
width: 100%;
height: 101%;
}