For fixed menu

[ahmetorhans]

For fixed side menu.
change css file bellow..

.touch-menu-la {
width: 280px;
height: 100%;
position: fixed;
top: 0;
left: -280px;
background-color: #FFF;
}

.touch-menu-la.opened {
overflow-y: scroll;
overflow-x: hidden;
transition: all 0.3s ease !important;
-webkit-transition: all 0.3s ease !important;
-moz-transition: all 0.3s ease !important;
}
.touch-menu-la.opened::-webkit-scrollbar {
display: none;
}