隐藏滚动条但是可以滚动，兼容IE，FF，Webkit 和 O

/*webkit内核*/
.scroll_content::-webkit-scrollbar {
    width:0px;
    height:0px;
}
.scroll_content::-webkit-scrollbar-button    {
    background-color:rgba(0,0,0,0);
}
.scroll_content::-webkit-scrollbar-track     {
    background-color:rgba(0,0,0,0);
}
.scroll_content::-webkit-scrollbar-track-piece {
    background-color:rgba(0,0,0,0);
}
.scroll_content::-webkit-scrollbar-thumb{
    background-color:rgba(0,0,0,0);
}
.scroll_content::-webkit-scrollbar-corner {
    background-color:rgba(0,0,0,0);
}
.scroll_content::-webkit-scrollbar-resizer  {
    background-color:rgba(0,0,0,0);
}
.scroll_content::-webkit-scrollbar {
    width:10px;
    height:10px;
}
/*o内核*/
.scroll_content .-o-scrollbar{
    -moz-appearance: none !important;   
    background: rgba(0,255,0,0) !important;  
}
.scroll_content::-o-scrollbar-button    {
    background-color:rgba(0,0,0,0);
}
.scroll_content::-o-scrollbar-track     {
    background-color:rgba(0,0,0,0);
}
.scroll_content::-o-scrollbar-track-piece {
    background-color:rgba(0,0,0,0);
}
.scroll_content::-o-scrollbar-thumb{
    background-color:rgba(0,0,0,0);
}
.scroll_content::-o-scrollbar-corner {
    background-color:rgba(0,0,0,0);
}
.scroll_content::-o-scrollbar-resizer  {
    background-color:rgba(0,0,0,0);
}
/*IE10,IE11,IE12*/
.scroll_content{
    -ms-scroll-chaining: chained;
    -ms-overflow-style: none;
    -ms-content-zooming: zoom;
    -ms-scroll-rails: none;
    -ms-content-zoom-limit-min: 100%;
    -ms-content-zoom-limit-max: 500%;
    -ms-scroll-snap-type: proximity;
    -ms-scroll-snap-points-x: snapList(100%, 200%, 300%, 400%, 500%);
    -ms-overflow-style: none;
    overflow: auto;
}

<script src="lib/jquery.min.js"></script>
<script src="lib/jquery.nicescroll.min.js"></script>
$(function(){
    //FF下用JS实现自定义滚动条
    $(".scroll_content").niceScroll({cursorborder:"",cursorcolor:"rgba(0,0,0,0)",boxzoom:true});
})