#menu {
    bottom: 0;
    box-sizing: border-box;
    display: block;
    position: absolute;
    top: 65px;
}

#menu_icon {
    display: none;
}

.btn {
    cursor: pointer;
}

.page {
    box-sizing: border-box;
    padding: 20px 20px 20px 220px;
}