drawer.jsスクロールできない対処法

js

$(document).ready(function() {
$('.drawer').drawer({
iscroll: {
mouseWheel: false
}
});
});

.drawer--top.drawer-open .drawer-nav {
      top: 0;
      overflow: auto;
      -webkit-overflow-scrolling: touch;
    }

    .drawer--left.drawer-open .drawer-nav,
    .drawer--left .drawer-hamburger,
    .drawer--left.drawer-open .drawer-navbar .drawer-hamburger {
      left: 0;
      overflow: auto;
      -webkit-overflow-scrolling: touch;
    }

    .drawer--right.drawer-open .drawer-nav,
    .drawer--right .drawer-hamburger,
    .drawer--right.drawer-open .drawer-navbar .drawer-hamburger {
      right: 0;
      overflow: auto;
      -webkit-overflow-scrolling: touch;
    }