.sidenav {
    background-color: #111;
    height: 100%;
    left: 0;
    overflow-x: hidden;
    padding-top: 60px;
    position: fixed;
    top: 0;
    transition: .5s;
    width: 0;
    z-index: 20;
    border: 1px solid #cdcdcd;
}

.sidenavR {
    background-color: #fff;
    height: 100%;
    overflow-x: hidden;
    padding-top: 60px;
    position: fixed;
    right: 0;
    top: 0;
    transition: .5s;
    z-index: 20;
    width: 0px;
    border: 1px solid #cdcdcd;
}

.sidenav a,
.sidenavR a {
    color: #818181;
    display: block;
    font-size: 25px;
    /* padding: 8px 8px 8px 32px; */
    text-decoration: none;
    transition: .3s;
}

.sidenav a:hover,
.offcanvas a:focus,
.sidenavR a:hover,
.offcanvas a:focus {
    color: #f1f1f1;
}

.sidenav .closebtn,
.sidenavR .closebtn {
    font-size: 16px;
    margin-left: 50px;
    position: absolute;
    right: 25px;
    top: 51px;
}

@media screen and max-height 450px {

    .sidenav,
    .sidenavR {
        padding-top: 15px;
    }

    .sidenav a,
    .sidenavR a {
        font-size: 18px;
    }
}